Uplink transmission in power saving mode

ABSTRACT

A wireless device receives a first downlink control information. The downlink control information indicates an activation of a configured uplink grant Type 2 of a cell. The wireless device transmits transport blocks based on the configured uplink grant Type 2. The wireless device transitions the cell to a dormancy in response to receiving a second downlink control information. The wireless device clears the configured uplink grant Type 2 associated with the cell in response to the transitioning the cell to the dormancy.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No.PCT/US2020/017846, filed Feb. 12, 2020, which claims the benefit of U.S.Provisional Application No. 62/805,182, filed Feb. 13, 2019, and U.S.Provisional Application No. 62/805,703, filed at Feb. 14, 2019, all ofwhich are hereby incorporated by reference in their entireties.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

Examples of several of the various embodiments of the present disclosureare described herein with reference to the drawings.

FIG. 1 is a diagram of an example RAN architecture as per an aspect ofan embodiment of the present disclosure.

FIG. 2A is a diagram of an example user plane protocol stack as per anaspect of an embodiment of the present disclosure.

FIG. 2B is a diagram of an example control plane protocol stack as peran aspect of an embodiment of the present disclosure.

FIG. 3 is a diagram of an example wireless device and two base stationsas per an aspect of an embodiment of the present disclosure.

FIG. 4A, FIG. 4B, FIG. 4C and FIG. 4D are example diagrams for uplinkand downlink signal transmission as per an aspect of an embodiment ofthe present disclosure.

FIG. 5A is a diagram of an example uplink channel mapping and exampleuplink physical signals as per an aspect of an embodiment of the presentdisclosure.

FIG. 5B is a diagram of an example downlink channel mapping and exampledownlink physical signals as per an aspect of an embodiment of thepresent disclosure.

FIG. 6 is a diagram depicting an example transmission time or receptiontime for a carrier as per an aspect of an embodiment of the presentdisclosure.

FIG. 7A and FIG. 7B are diagrams depicting example sets of OFDMsubcarriers as per an aspect of an embodiment of the present disclosure.

FIG. 8 is a diagram depicting example OFDM radio resources as per anaspect of an embodiment of the present disclosure.

FIG. 9A is a diagram depicting an example CSI-RS and/or SS blocktransmission in a multi-beam system.

FIG. 9B is a diagram depicting an example downlink beam managementprocedure as per an aspect of an embodiment of the present disclosure.

FIG. 10 is an example diagram of configured BWPs as per an aspect of anembodiment of the present disclosure.

FIG. 11A, and FIG. 11B are diagrams of an example multi connectivity asper an aspect of an embodiment of the present disclosure.

FIG. 12 is a diagram of an example random access procedure as per anaspect of an embodiment of the present disclosure.

FIG. 13 is a structure of example MAC entities as per an aspect of anembodiment of the present disclosure.

FIG. 14 is a diagram of an example RAN architecture as per an aspect ofan embodiment of the present disclosure.

FIG. 15 is a diagram of example RRC states as per an aspect of anembodiment of the present disclosure.

FIG. 16A, FIG. 16B and FIG. 16C are examples of MAC subheaders as per anaspect of an embodiment of the present disclosure.

FIG. 17A and FIG. 17B are examples of MAC PDUs as per an aspect of anembodiment of the present disclosure.

FIG. 18 is an example of LCIDs for DL-SCH as per an aspect of anembodiment of the present disclosure.

FIG. 19 is an example of LCIDs for UL-SCH as per an aspect of anembodiment of the present disclosure.

FIG. 20A is an example of an SCell Activation/Deactivation MAC CE of oneoctet as per an aspect of an embodiment of the present disclosure.

FIG. 20B is an example of an SCell Activation/Deactivation MAC CE offour octets as per an aspect of an embodiment of the present disclosure.

FIG. 21A is an example of an SCell hibernation MAC CE of one octet asper an aspect of an embodiment of the present disclosure.

FIG. 21B is an example of an SCell hibernation MAC CE of four octets asper an aspect of an embodiment of the present disclosure.

FIG. 21C is an example of MAC control elements for an SCell statetransitions as per an aspect of an embodiment of the present disclosure.

FIG. 22 is an example of DCI formats as per an aspect of an embodimentof the present disclosure.

FIG. 23 is an example of BWP management on an SCell as per an aspect ofan embodiment of the present disclosure.

FIG. 24 is an example of discontinuous reception (DRX) operation as peran aspect of an embodiment of the present disclosure.

FIG. 25 is an example of DRX operation as per an aspect of an embodimentof the present disclosure.

FIG. 26A is an example of a wake-up signal/channel based power savingoperation as per an aspect of an embodiment of the present disclosure.

FIG. 26B is an example of a go-to-sleep signal/channel based powersaving operation as per an aspect of an embodiment of the presentdisclosure.

FIG. 27 shows an example embodiment of power saving enabling/disablingas per an aspect of an embodiment of the present disclosure.

FIG. 28 shows an example embodiment of DCI for power saving enabling (oractivating) as per an aspect of an embodiment of the present disclosure.

FIG. 29 shows an example embodiment of DCI for power saving disabling(or deactivating) as per an aspect of an embodiment of the presentdisclosure.

FIG. 30 shows an example of one or more CSI reporting configurations asper an aspect of an embodiment of the present disclosure.

FIG. 31 shows an example embodiment of semi-persistent CSI reportingmechanism as per an aspect of an embodiment of the present disclosure.

FIG. 32 shows an example embodiment of semi-persistent CSI reportingmechanism with BWP switching as per an aspect of an embodiment of thepresent disclosure.

FIG. 33 shows an example embodiment of semi-persistent CSI reportingmechanism with BWP switching as per an aspect of an embodiment of thepresent disclosure.

FIG. 34 shows an example embodiment of semi-persistent CSI reporting ina power saving state as per an aspect of an embodiment of the presentdisclosure.

FIG. 35 shows an example embodiment of semi-persistent CSI reporting ina power saving state as per an aspect of an embodiment of the presentdisclosure.

FIG. 36 shows an example embodiment of semi-persistent CSI-RSmeasurement in a power saving state as per an aspect of an embodiment ofthe present disclosure.

FIG. 37A, FIG. 37B and FIG. 37C show example embodiments of SRStransmissions as per an aspect of an embodiment of the presentdisclosure.

FIG. 38 shows an example embodiment of SRS transmission in a powersaving state as per an aspect of an embodiment of the presentdisclosure.

FIG. 39 shows an example embodiment of uplink transmission based onconfigured uplink grant Type 1 in a power saving state as per an aspectof an embodiment of the present disclosure.

FIG. 40 shows an example embodiment of uplink transmission based onconfigured uplink grant Type 2 in a power saving state as per an aspectof an embodiment of the present disclosure.

FIG. 41 shows an example embodiment of TCI based PDCCH monitoring in apower saving state as per an aspect of an embodiment of the presentdisclosure.

FIG. 42 shows an example embodiment of PUCCH transmission based onspatial relation information in a power saving state as per an aspect ofan embodiment of the present disclosure.

FIG. 43 shows an example flowchart of uplink transmission of aconfigured grant Type 2 in a power saving operation per an aspect of anembodiment of the present disclosure.

FIG. 44 shows an example flowchart of uplink transmission of aconfigured grant Type 2 in a power saving operation per an aspect of anembodiment of the present disclosure.

FIG. 45 shows an example flowchart of uplink transmission of aconfigured grant Type 1 in a power saving operation per an aspect of anembodiment of the present disclosure.

FIG. 46 shows an example flowchart of uplink transmission of aconfigured grant Type 1 in a power saving operation per an aspect of anembodiment of the present disclosure.

FIG. 47 is an example procedure of CSI reporting as per an aspect of anembodiment of the present disclosure.

FIG. 48 is an example procedure of CSI reporting in DRX operation as peran aspect of an embodiment of the present disclosure.

FIG. 49 is an example procedure of CSI reporting in DRX operation as peran aspect of an embodiment of the present disclosure.

FIG. 50 is an example procedure of CSI reporting in DRX operation as peran aspect of an embodiment of the present disclosure.

FIG. 51 is an example procedure of CSI reporting in DRX operation as peran aspect of an embodiment of the present disclosure.

FIG. 52 is an example procedure of CSI reporting in DRX operation as peran aspect of an embodiment of the present disclosure.

FIG. 53 is an example procedure of CSI reporting in DRX operation as peran aspect of an embodiment of the present disclosure.

FIG. 54 is an example procedure of CSI reporting in DRX operation as peran aspect of an embodiment of the present disclosure.

FIG. 55 is an example procedure of CSI reporting in DRX operation as peran aspect of an embodiment of the present disclosure.

FIG. 56 is an example procedure of CSI reporting in DRX operation as peran aspect of an embodiment of the present disclosure.

DETAILED DESCRIPTION OF EMBODIMENTS

Example embodiments of the present disclosure enable power savingoperations of a wireless device and/or a base station. Embodiments ofthe technology disclosed herein may be employed in the technical fieldof multicarrier communication systems. More particularly, theembodiments of the technology disclosed herein may relate to a wirelessdevice and/or a base station in a multicarrier communication system.

The following Acronyms are used throughout the present disclosure:

3GPP 3rd Generation Partnership Project 5GC 5G Core Network ACKAcknowledgement AMF Access and Mobility Management Function ARQAutomatic Repeat Request AS Access Stratum ASIC Application-SpecificIntegrated Circuit BA Bandwidth Adaptation BCCH Broadcast ControlChannel BCH Broadcast Channel BPSK Binary Phase Shift Keying BWPBandwidth Part CA Carrier Aggregation CC Component Carrier CCCH CommonControl CHannel CDMA Code Division Multiple Access CN Core Network CPCyclic Prefix CP-OFDM Cyclic Prefix- Orthogonal Frequency DivisionMultiplex C-RNTI Cell-Radio Network Temporary Identifier CS ConfiguredScheduling CSI Channel State Information CSI-RS Channel StateInformation-Reference Signal CQI Channel Quality Indicator CRC CyclicRedundancy Check CSS Common Search Space CU Central Unit DAI DownlinkAssignment Index DC Dual Connectivity DCCH Dedicated Control Channel DCIDownlink Control Information DL Downlink DL-SCH Downlink Shared CHannelDM-RS DeModulation Reference Signal DRB Data Radio Bearer DRXDiscontinuous Reception DTCH Dedicated Traffic Channel DU DistributedUnit EPC Evolved Packet Core E-UTRA Evolved UMTS Terrestrial RadioAccess E-UTRAN Evolved-Universal Terrestrial Radio Access Network FDDFrequency Division Duplex FPGA Field Programmable Gate Arrays F1-CF1-Control plane F1-U F1-User plane gNB next generation Node B HARQHybrid Automatic Repeat reQuest HDL Hardware Description Languages IEInformation Element IP Internet Protocol LCID Logical Channel IdentifierLTE Long Term Evolution MAC Media Access Control MCG Master Cell GroupMCS Modulation and Coding Scheme MeNB Master evolved Node B MIB MasterInformation Block MME Mobility Management Entity MN Master Node NACKNegative Acknowledgement NAS Non-Access Stratum NG CP Next GenerationControl Plane NGC Next Generation Core NG-C NG-Control plane ng-eNB nextgeneration evolved Node B NG-U NG-User plane NR New Radio NR MAC NewRadio MAC NR PDCP New Radio PDCP NR PHY New Radio PHYsical NR RLC NewRadio RLC NR RRC New Radio RRC NSSAI Network Slice Selection AssistanceInformation O&M Operation and Maintenance OFDM orthogonal FrequencyDivision Multiplexing PBCH Physical Broadcast CHannel PCC PrimaryComponent Carrier PCCH Paging Control CHannel PCell Primary Cell PCHPaging CHannel PDCCH Physical Downlink Control CHannel PDCP Packet DataConvergence Protocol PDSCH Physical Downlink Shared CHannel PDU ProtocolData Unit PHICH Physical HARQ Indicator CHannel PHY PHYsical PLMN PublicLand Mobile Network PMI Precoding Matrix Indicator PRACH Physical RandomAccess CHannel PRB Physical Resource Block PSCell Primary Secondary CellPSS Primary Synchronization Signal pTAG primary Timing Advance GroupPT-RS Phase Tracking Reference Signal PUCCH Physical Uplink ControlCHannel PUSCH Physical Uplink Shared CHannel QAM Quadrature AmplitudeModulation QFI Quality of Service Indicator QoS Quality of Service QPSKQuadrature Phase Shift Keying RA Random Access RACH Random AccessCHannel RAN Radio Access Network RAT Radio Access Technology RA-RNTIRandom Access-Radio Network Temporary Identifier RB Resource Blocks RBGResource Block Groups RI Rank indicator RLC Radio Link Control RLM RadioLink Monitoring RNTI Radio Network Temporary Identifier RRC RadioResource Control RRM Radio Resource Management RS Reference Signal RSRPReference Signal Received Power SCC Secondary Component Carrier SCellSecondary Cell SCG Secondary Cell Group SC-FDMA Single Carrier-FrequencyDivision Multiple Access SDAP Service Data Adaptation Protocol SDUService Data Unit SeNB Secondary evolved Node B SFN System Frame NumberS-GW Serving GateWay SI System Information SIB System Information BlockSMF Session Management Function SN Secondary Node SpCell Special CellSRB Signaling Radio Bearer SRS Sounding Reference Signal SSSynchronization Signal SSS Secondary Synchronization Signal sTAGsecondary Timing Advance Group TA Timing Advance TAG Timing AdvanceGroup TAI Tracking Area Identifier TAT Time Alignment Timer TB TransportBlock TCI Transmission Configuration Indication TC-RNTI TemporaryCell-Radio Network Temporary Identifier TDD Time Division Duplex TDMATime Division Multiple Access TRP Transmission Reception Point TTITransmission Time Interval UCI Uplink Control Information UE UserEquipment UL Uplink UL-SCH Uplink Shared CHannel UPF User Plane FunctionUPGW User Plane Gateway VHDL VHSIC Hardware Description Language Xn-CXn-Control plane Xn-U Xn-User plane

Example embodiments of the disclosure may be implemented using variousphysical layer modulation and transmission mechanisms. Exampletransmission mechanisms may include, but not limited to: Code DivisionMultiple Access (CDMA), Orthogonal Frequency Division Multiple Access(OFDMA), Time Division Multiple Access (TDMA), Wavelet technologies,and/or the like. Hybrid transmission mechanisms such as TDMA/CDMA, andOFDM/CDMA may also be employed. Various modulation schemes may beapplied for signal transmission in the physical layer. Examples ofmodulation schemes include, but are not limited to: phase, amplitude,code, a combination of these, and/or the like. An example radiotransmission method may implement Quadrature Amplitude Modulation (QAM)using Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying(QPSK), 16-QAM, 64-QAM, 256-QAM, 1024-QAM, and/or the like. Physicalradio transmission may be enhanced by dynamically or semi-dynamicallychanging the modulation and coding scheme depending on transmissionrequirements and radio conditions.

FIG. 1 is an example Radio Access Network (RAN) architecture as per anaspect of an embodiment of the present disclosure. As illustrated inthis example, a RAN node may be a next generation Node B (gNB) (e.g.120A, 120B) providing New Radio (NR) user plane and control planeprotocol terminations towards a first wireless device (e.g. 110A). In anexample, a RAN node may be a next generation evolved Node B (ng-eNB)(e.g. 120C, 120D), providing Evolved UMTS Terrestrial Radio Access(E-UTRA) user plane and control plane protocol terminations towards asecond wireless device (e.g. 110B). The first wireless device maycommunicate with a gNB over a Uu interface. The second wireless devicemay communicate with a ng-eNB over a Uu interface.

A gNB or an ng-eNB may host functions such as radio resource managementand scheduling, IP header compression, encryption and integrityprotection of data, selection of Access and Mobility Management Function(AMF) at User Equipment (UE) attachment, routing of user plane andcontrol plane data, connection setup and release, scheduling andtransmission of paging messages (originated from the AMF), schedulingand transmission of system broadcast information (originated from theAMF or Operation and Maintenance (O&M)), measurement and measurementreporting configuration, transport level packet marking in the uplink,session management, support of network slicing, Quality of Service (QoS)flow management and mapping to data radio bearers, support of UEs inRRC_INACTIVE state, distribution function for Non-Access Stratum (NAS)messages, RAN sharing, dual connectivity or tight interworking betweenNR and E-UTRA.

In an example, one or more gNBs and/or one or more ng-eNBs may beinterconnected with each other by means of Xn interface. A gNB or anng-eNB may be connected by means of NG interfaces to 5G Core Network(5GC). In an example, 5GC may comprise one or more AMF/User PlanFunction (UPF) functions (e.g. 130A or 130B). A gNB or an ng-eNB may beconnected to a UPF by means of an NG-User plane (NG-U) interface. TheNG-U interface may provide delivery (e.g. non-guaranteed delivery) ofuser plane Protocol Data Units (PDUs) between a RAN node and the UPF. AgNB or an ng-eNB may be connected to an AMF by means of an NG-Controlplane (NG-C) interface. The NG-C interface may provide functions such asNG interface management, UE context management, UE mobility management,transport of NAS messages, paging, PDU session management, configurationtransfer or warning message transmission.

In an example, a UPF may host functions such as anchor point forintra-/inter-Radio Access Technology (RAT) mobility (when applicable),external PDU session point of interconnect to data network, packetrouting and forwarding, packet inspection and user plane part of policyrule enforcement, traffic usage reporting, uplink classifier to supportrouting traffic flows to a data network, branching point to supportmulti-homed PDU session, QoS handling for user plane, e.g. packetfiltering, gating, Uplink (UL)/Downlink (DL) rate enforcement, uplinktraffic verification (e.g. Service Data Flow (SDF) to QoS flow mapping),downlink packet buffering and/or downlink data notification triggering.

In an example, an AMF may host functions such as NAS signalingtermination, NAS signaling security, Access Stratum (AS) securitycontrol, inter Core Network (CN) node signaling for mobility between3^(rd) Generation Partnership Project (3GPP) access networks, idle modeUE reachability (e.g., control and execution of paging retransmission),registration area management, support of intra-system and inter-systemmobility, access authentication, access authorization including check ofroaming rights, mobility management control (subscription and policies),support of network slicing and/or Session Management Function (SMF)selection.

FIG. 2A is an example user plane protocol stack, where Service DataAdaptation Protocol (SDAP) (e.g. 211 and 221), Packet Data ConvergenceProtocol (PDCP) (e.g. 212 and 222), Radio Link Control (RLC) (e.g. 213and 223) and Media Access Control (MAC) (e.g. 214 and 224) sublayers andPhysical (PHY) (e.g. 215 and 225) layer may be terminated in wirelessdevice (e.g. 110) and gNB (e.g. 120) on the network side. In an example,a PHY layer provides transport services to higher layers (e.g. MAC, RRC,etc.). In an example, services and functions of a MAC sublayer maycomprise mapping between logical channels and transport channels,multiplexing/demultiplexing of MAC Service Data Units (SDUs) belongingto one or different logical channels into/from Transport Blocks (TBs)delivered to/from the PHY layer, scheduling information reporting, errorcorrection through Hybrid Automatic Repeat request (HARQ) (e.g. one HARQentity per carrier in case of Carrier Aggregation (CA)), priorityhandling between UEs by means of dynamic scheduling, priority handlingbetween logical channels of one UE by means of logical channelprioritization, and/or padding. A MAC entity may support one or multiplenumerologies and/or transmission timings. In an example, mappingrestrictions in a logical channel prioritization may control whichnumerology and/or transmission timing a logical channel may use. In anexample, an RLC sublayer may supports transparent mode (TM),unacknowledged mode (UM) and acknowledged mode (AM) transmission modes.The RLC configuration may be per logical channel with no dependency onnumerologies and/or Transmission Time Interval (TTI) durations. In anexample, Automatic Repeat Request (ARQ) may operate on any of thenumerologies and/or TTI durations the logical channel is configuredwith. In an example, services and functions of the PDCP layer for theuser plane may comprise sequence numbering, header compression anddecompression, transfer of user data, reordering and duplicatedetection, PDCP PDU routing (e.g. in case of split bearers),retransmission of PDCP SDUs, ciphering, deciphering and integrityprotection, PDCP SDU discard, PDCP re-establishment and data recoveryfor RLC AM, and/or duplication of PDCP PDUs. In an example, services andfunctions of SDAP may comprise mapping between a QoS flow and a dataradio bearer. In an example, services and functions of SDAP may comprisemapping Quality of Service Indicator (QFI) in DL and UL packets. In anexample, a protocol entity of SDAP may be configured for an individualPDU session.

FIG. 2B is an example control plane protocol stack where PDCP (e.g. 233and 242), RLC (e.g. 234 and 243) and MAC (e.g. 235 and 244) sublayersand PHY (e.g. 236 and 245) layer may be terminated in wireless device(e.g. 110) and gNB (e.g. 120) on a network side and perform service andfunctions described above. In an example, RRC (e.g. 232 and 241) may beterminated in a wireless device and a gNB on a network side. In anexample, services and functions of RRC may comprise broadcast of systeminformation related to AS and NAS, paging initiated by 5GC or RAN,establishment, maintenance and release of an RRC connection between theUE and RAN, security functions including key management, establishment,configuration, maintenance and release of Signaling Radio Bearers (SRBs)and Data Radio Bearers (DRBs), mobility functions, QoS managementfunctions, UE measurement reporting and control of the reporting,detection of and recovery from radio link failure, and/or NAS messagetransfer to/from NAS from/to a UE. In an example, NAS control protocol(e.g. 231 and 251) may be terminated in the wireless device and AMF(e.g. 130) on a network side and may perform functions such asauthentication, mobility management between a UE and an AMF for 3GPPaccess and non-3GPP access, and session management between a UE and aSMF for 3GPP access and non-3GPP access.

In an example, a base station may configure a plurality of logicalchannels for a wireless device. A logical channel in the plurality oflogical channels may correspond to a radio bearer and the radio bearermay be associated with a QoS requirement. In an example, a base stationmay configure a logical channel to be mapped to one or moreTTIs/numerologies in a plurality of TTIs/numerologies. The wirelessdevice may receive a Downlink Control Information (DCI) via PhysicalDownlink Control CHannel (PDCCH) indicating an uplink grant. In anexample, the uplink grant may be for a first TTI/numerology and mayindicate uplink resources for transmission of a transport block. Thebase station may configure each logical channel in the plurality oflogical channels with one or more parameters to be used by a logicalchannel prioritization procedure at the MAC layer of the wirelessdevice. The one or more parameters may comprise priority, prioritizedbit rate, etc. A logical channel in the plurality of logical channelsmay correspond to one or more buffers comprising data associated withthe logical channel. The logical channel prioritization procedure mayallocate the uplink resources to one or more first logical channels inthe plurality of logical channels and/or one or more MAC ControlElements (CEs). The one or more first logical channels may be mapped tothe first TTI/numerology. The MAC layer at the wireless device maymultiplex one or more MAC CEs and/or one or more MAC SDUs (e.g., logicalchannel) in a MAC PDU (e.g., transport block). In an example, the MACPDU may comprise a MAC header comprising a plurality of MAC sub-headers.A MAC sub-header in the plurality of MAC sub-headers may correspond to aMAC CE or a MAC SUD (logical channel) in the one or more MAC CEs and/orone or more MAC SDUs. In an example, a MAC CE or a logical channel maybe configured with a Logical Channel IDentifier (LCID). In an example,LCID for a logical channel or a MAC CE may be fixed/pre-configured. Inan example, LCID for a logical channel or MAC CE may be configured forthe wireless device by the base station. The MAC sub-headercorresponding to a MAC CE or a MAC SDU may comprise LCID associated withthe MAC CE or the MAC SDU.

In an example, a base station may activate and/or deactivate and/orimpact one or more processes (e.g., set values of one or more parametersof the one or more processes or start and/or stop one or more timers ofthe one or more processes) at the wireless device by employing one ormore MAC commands. The one or more MAC commands may comprise one or moreMAC control elements. In an example, the one or more processes maycomprise activation and/or deactivation of PDCP packet duplication forone or more radio bearers. The base station may transmit a MAC CEcomprising one or more fields, the values of the fields indicatingactivation and/or deactivation of PDCP duplication for the one or moreradio bearers. In an example, the one or more processes may compriseChannel State Information (CSI) transmission of on one or more cells.The base station may transmit one or more MAC CEs indicating activationand/or deactivation of the CSI transmission on the one or more cells. Inan example, the one or more processes may comprise activation ordeactivation of one or more secondary cells. In an example, the basestation may transmit a MA CE indicating activation or deactivation ofone or more secondary cells. In an example, the base station maytransmit one or more MAC CEs indicating starting and/or stopping one ormore Discontinuous Reception (DRX) timers at the wireless device. In anexample, the base station may transmit one or more MAC CEs indicatingone or more timing advance values for one or more Timing Advance Groups(TAGs).

FIG. 3 is a block diagram of base stations (base station 1, 120A, andbase station 2, 120B) and a wireless device 110. A wireless device maybe called a UE. A base station may be called a NB, eNB, gNB, and/orng-eNB. In an example, a wireless device and/or a base station may actas a relay node. The base station 1, 120A, may comprise at least onecommunication interface 320A (e.g. a wireless modem, an antenna, a wiredmodem, and/or the like), at least one processor 321A, and at least oneset of program code instructions 323A stored in non-transitory memory322A and executable by the at least one processor 321A. The base station2, 120B, may comprise at least one communication interface 320B, atleast one processor 321B, and at least one set of program codeinstructions 323B stored in non-transitory memory 322B and executable bythe at least one processor 321B.

A base station may comprise many sectors for example: 1, 2, 3, 4, or 6sectors. A base station may comprise many cells, for example, rangingfrom 1 to 50 cells or more. A cell may be categorized, for example, as aprimary cell or secondary cell. At Radio Resource Control (RRC)connection establishment/re-establishment/handover, one serving cell mayprovide the NAS (non-access stratum) mobility information (e.g. TrackingArea Identifier (TAI)). At RRC connection re-establishment/handover, oneserving cell may provide the security input. This cell may be referredto as the Primary Cell (PCell). In the downlink, a carrier correspondingto the PCell may be a DL Primary Component Carrier (PCC), while in theuplink, a carrier may be an UL PCC. Depending on wireless devicecapabilities, Secondary Cells (SCells) may be configured to formtogether with a PCell a set of serving cells. In a downlink, a carriercorresponding to an SCell may be a downlink secondary component carrier(DL SCC), while in an uplink, a carrier may be an uplink secondarycomponent carrier (UL SCC). An SCell may or may not have an uplinkcarrier.

A cell, comprising a downlink carrier and optionally an uplink carrier,may be assigned a physical cell ID and a cell index. A carrier (downlinkor uplink) may belong to one cell. The cell ID or cell index may alsoidentify the downlink carrier or uplink carrier of the cell (dependingon the context it is used). In the disclosure, a cell ID may be equallyreferred to a carrier ID, and a cell index may be referred to a carrierindex. In an implementation, a physical cell ID or a cell index may beassigned to a cell. A cell ID may be determined using a synchronizationsignal transmitted on a downlink carrier. A cell index may be determinedusing RRC messages. For example, when the disclosure refers to a firstphysical cell ID for a first downlink carrier, the disclosure may meanthe first physical cell ID is for a cell comprising the first downlinkcarrier. The same concept may apply to, for example, carrier activation.When the disclosure indicates that a first carrier is activated, thespecification may equally mean that a cell comprising the first carrieris activated.

A base station may transmit to a wireless device one or more messages(e.g. RRC messages) comprising a plurality of configuration parametersfor one or more cells. One or more cells may comprise at least oneprimary cell and at least one secondary cell. In an example, an RRCmessage may be broadcasted or unicasted to the wireless device. In anexample, configuration parameters may comprise common parameters anddedicated parameters.

Services and/or functions of an RRC sublayer may comprise at least oneof: broadcast of system information related to AS and NAS; paginginitiated by 5GC and/or NG-RAN; establishment, maintenance, and/orrelease of an RRC connection between a wireless device and NG-RAN, whichmay comprise at least one of addition, modification and release ofcarrier aggregation; or addition, modification, and/or release of dualconnectivity in NR or between E-UTRA and NR. Services and/or functionsof an RRC sublayer may further comprise at least one of securityfunctions comprising key management; establishment, configuration,maintenance, and/or release of Signaling Radio Bearers (SRBs) and/orData Radio Bearers (DRBs); mobility functions which may comprise atleast one of a handover (e.g. intra NR mobility or inter-RAT mobility)and a context transfer; or a wireless device cell selection andreselection and control of cell selection and reselection. Servicesand/or functions of an RRC sublayer may further comprise at least one ofQoS management functions; a wireless device measurementconfiguration/reporting; detection of and/or recovery from radio linkfailure; or NAS message transfer to/from a core network entity (e.g.AMF, Mobility Management Entity (MME)) from/to the wireless device.

An RRC sublayer may support an RRC_Idle state, an RRC_Inactive stateand/or an RRC_Connected state for a wireless device. In an RRC_Idlestate, a wireless device may perform at least one of: Public Land MobileNetwork (PLMN) selection; receiving broadcasted system information; cellselection/re-selection; monitoring/receiving a paging for mobileterminated data initiated by 5GC; paging for mobile terminated data areamanaged by 5GC; or DRX for CN paging configured via NAS. In anRRC_Inactive state, a wireless device may perform at least one of:receiving broadcasted system information; cell selection/re-selection;monitoring/receiving a RAN/CN paging initiated by NG-RAN/5GC; RAN-basednotification area (RNA) managed by NG-RAN; or DRX for RAN/CN pagingconfigured by NG-RAN/NAS. In an RRC_Idle state of a wireless device, abase station (e.g. NG-RAN) may keep a 5GC-NG-RAN connection (bothC/U-planes) for the wireless device; and/or store a UE AS context forthe wireless device. In an RRC_Connected state of a wireless device, abase station (e.g. NG-RAN) may perform at least one of: establishment of5GC-NG-RAN connection (both C/U-planes) for the wireless device; storinga UE AS context for the wireless device; transmit/receive of unicastdata to/from the wireless device; or network-controlled mobility basedon measurement results received from the wireless device. In anRRC_Connected state of a wireless device, an NG-RAN may know a cell thatthe wireless device belongs to.

System information (SI) may be divided into minimum SI and other SIs.The minimum SI may be periodically broadcast. The minimum SI maycomprise basic information required for initial access and informationfor acquiring any other SI broadcast periodically or provisionedon-demand, i.e. scheduling information. The other SI may either bebroadcast, or be provisioned in a dedicated manner, either triggered bya network or upon request from a wireless device. A minimum SI may betransmitted via two different downlink channels using different messages(e.g. MasterInformationBlock and SystemInformationBlockType1). AnotherSI may be transmitted via SystemInformationBlockType2. For a wirelessdevice in an RRC_Connected state, dedicated RRC signalling may beemployed for the request and delivery of the other SI. For the wirelessdevice in the RRC_Idle state and/or the RRC_Inactive state, the requestmay trigger a random-access procedure.

A wireless device may report its radio access capability informationwhich may be static. A base station may request what capabilities for awireless device to report based on band information. When allowed by anetwork, a temporary capability restriction request may be sent by thewireless device to signal the limited availability of some capabilities(e.g. due to hardware sharing, interference or overheating) to the basestation. The base station may confirm or reject the request. Thetemporary capability restriction may be transparent to 5GC (e.g., staticcapabilities may be stored in 5GC).

When CA is configured, a wireless device may have an RRC connection witha network. At RRC connection establishment/re-establishment/handoverprocedure, one serving cell may provide NAS mobility information, and atRRC connection re-establishment/handover, one serving cell may provide asecurity input. This cell may be referred to as the PCell. Depending onthe capabilities of the wireless device, SCells may be configured toform together with the PCell a set of serving cells. The configured setof serving cells for the wireless device may comprise one PCell and oneor more SCells.

The reconfiguration, addition and removal of SCells may be performed byRRC. At intra-NR handover, RRC may also add, remove, or reconfigureSCells for usage with the target PCell. When adding a new SCell,dedicated RRC signalling may be employed to send all required systeminformation of the SCell i.e. while in connected mode, wireless devicesmay not need to acquire broadcasted system information directly from theSCells.

The purpose of an RRC connection reconfiguration procedure may be tomodify an RRC connection, (e.g. to establish, modify and/or release RBs,to perform handover, to setup, modify, and/or release measurements, toadd, modify, and/or release SCells and cell groups). As part of the RRCconnection reconfiguration procedure, NAS dedicated information may betransferred from the network to the wireless device. TheRRCConnectionReconfiguration message may be a command to modify an RRCconnection. It may convey information for measurement configuration,mobility control, radio resource configuration (e.g. RBs, MAC mainconfiguration and physical channel configuration) comprising anyassociated dedicated NAS information and security configuration. If thereceived RRC Connection Reconfiguration message includes thesCellToReleaseList, the wireless device may perform an SCell release. Ifthe received RRC Connection Reconfiguration message includes thesCellToAddModList, the wireless device may perform SCell additions ormodification.

An RRC connection establishment (or reestablishment, resume) proceduremay be to establish (or reestablish, resume) an RRC connection. an RRCconnection establishment procedure may comprise SRB1 establishment. TheRRC connection establishment procedure may be used to transfer theinitial NAS dedicated information/message from a wireless device toE-UTRAN. The RRCConnectionReestablishment message may be used tore-establish SRB1.

A measurement report procedure may be to transfer measurement resultsfrom a wireless device to NG-RAN. The wireless device may initiate ameasurement report procedure after successful security activation. Ameasurement report message may be employed to transmit measurementresults.

The wireless device 110 may comprise at least one communicationinterface 310 (e.g. a wireless modem, an antenna, and/or the like), atleast one processor 314, and at least one set of program codeinstructions 316 stored in non-transitory memory 315 and executable bythe at least one processor 314. The wireless device 110 may furthercomprise at least one of at least one speaker/microphone 311, at leastone keypad 312, at least one display/touchpad 313, at least one powersource 317, at least one global positioning system (GPS) chipset 318,and other peripherals 319.

The processor 314 of the wireless device 110, the processor 321A of thebase station 1 120A, and/or the processor 321B of the base station 2120B may comprise at least one of a general-purpose processor, a digitalsignal processor (DSP), a controller, a microcontroller, an applicationspecific integrated circuit (ASIC), a field programmable gate array(FPGA) and/or other programmable logic device, discrete gate and/ortransistor logic, discrete hardware components, and the like. Theprocessor 314 of the wireless device 110, the processor 321A in basestation 1 120A, and/or the processor 321B in base station 2 120B mayperform at least one of signal coding/processing, data processing, powercontrol, input/output processing, and/or any other functionality thatmay enable the wireless device 110, the base station 1 120A and/or thebase station 2 120B to operate in a wireless environment.

The processor 314 of the wireless device 110 may be connected to thespeaker/microphone 311, the keypad 312, and/or the display/touchpad 313.The processor 314 may receive user input data from and/or provide useroutput data to the speaker/microphone 311, the keypad 312, and/or thedisplay/touchpad 313. The processor 314 in the wireless device 110 mayreceive power from the power source 317 and/or may be configured todistribute the power to the other components in the wireless device 110.The power source 317 may comprise at least one of one or more dry cellbatteries, solar cells, fuel cells, and the like. The processor 314 maybe connected to the GPS chipset 318. The GPS chipset 318 may beconfigured to provide geographic location information of the wirelessdevice 110.

The processor 314 of the wireless device 110 may further be connected toother peripherals 319, which may comprise one or more software and/orhardware modules that provide additional features and/orfunctionalities. For example, the peripherals 319 may comprise at leastone of an accelerometer, a satellite transceiver, a digital camera, auniversal serial bus (USB) port, a hands-free headset, a frequencymodulated (FM) radio unit, a media player, an Internet browser, and thelike.

The communication interface 320A of the base station 1, 120A, and/or thecommunication interface 320B of the base station 2, 120B, may beconfigured to communicate with the communication interface 310 of thewireless device 110 via a wireless link 330A and/or a wireless link 330Brespectively. In an example, the communication interface 320A of thebase station 1, 120A, may communicate with the communication interface320B of the base station 2 and other RAN and core network nodes.

The wireless link 330A and/or the wireless link 330B may comprise atleast one of a bi-directional link and/or a directional link. Thecommunication interface 310 of the wireless device 110 may be configuredto communicate with the communication interface 320A of the base station1 120A and/or with the communication interface 320B of the base station2 120B. The base station 1 120A and the wireless device 110 and/or thebase station 2 120B and the wireless device 110 may be configured tosend and receive transport blocks via the wireless link 330A and/or viathe wireless link 330B, respectively. The wireless link 330A and/or thewireless link 330B may employ at least one frequency carrier. Accordingto some of various aspects of embodiments, transceiver(s) may beemployed. A transceiver may be a device that comprises both atransmitter and a receiver. Transceivers may be employed in devices suchas wireless devices, base stations, relay nodes, and/or the like.Example embodiments for radio technology implemented in thecommunication interface 310, 320A, 320B and the wireless link 330A, 330Bare illustrated in FIG. 4A, FIG. 4B, FIG. 4C, FIG. 4D, FIG. 6, FIG. 7A,FIG. 7B, FIG. 8, and associated text.

In an example, other nodes in a wireless network (e.g. AMF, UPF, SMF,etc.) may comprise one or more communication interfaces, one or moreprocessors, and memory storing instructions.

A node (e.g. wireless device, base station, AMF, SMF, UPF, servers,switches, antennas, and/or the like) may comprise one or moreprocessors, and memory storing instructions that when executed by theone or more processors causes the node to perform certain processesand/or functions. Example embodiments may enable operation ofsingle-carrier and/or multi-carrier communications. Other exampleembodiments may comprise a non-transitory tangible computer readablemedia comprising instructions executable by one or more processors tocause operation of single-carrier and/or multi-carrier communications.Yet other example embodiments may comprise an article of manufacturethat comprises a non-transitory tangible computer readablemachine-accessible medium having instructions encoded thereon forenabling programmable hardware to cause a node to enable operation ofsingle-carrier and/or multi-carrier communications. The node may includeprocessors, memory, interfaces, and/or the like.

An interface may comprise at least one of a hardware interface, afirmware interface, a software interface, and/or a combination thereof.The hardware interface may comprise connectors, wires, electronicdevices such as drivers, amplifiers, and/or the like. The softwareinterface may comprise code stored in a memory device to implementprotocol(s), protocol layers, communication drivers, device drivers,combinations thereof, and/or the like. The firmware interface maycomprise a combination of embedded hardware and code stored in and/or incommunication with a memory device to implement connections, electronicdevice operations, protocol(s), protocol layers, communication drivers,device drivers, hardware operations, combinations thereof, and/or thelike.

FIG. 4A, FIG. 4B, FIG. 4C and FIG. 4D are example diagrams for uplinkand downlink signal transmission as per an aspect of an embodiment ofthe present disclosure. FIG. 4A shows an example uplink transmitter forat least one physical channel. A baseband signal representing a physicaluplink shared channel may perform one or more functions. The one or morefunctions may comprise at least one of: scrambling; modulation ofscrambled bits to generate complex-valued symbols; mapping of thecomplex-valued modulation symbols onto one or several transmissionlayers; transform precoding to generate complex-valued symbols;precoding of the complex-valued symbols; mapping of precodedcomplex-valued symbols to resource elements; generation ofcomplex-valued time-domain Single Carrier-Frequency Division MultipleAccess (SC-FDMA) or CP-OFDM signal for an antenna port; and/or the like.In an example, when transform precoding is enabled, a SC-FDMA signal foruplink transmission may be generated. In an example, when transformprecoding is not enabled, an CP-OFDM signal for uplink transmission maybe generated by FIG. 4A. These functions are illustrated as examples andit is anticipated that other mechanisms may be implemented in variousembodiments.

An example structure for modulation and up-conversion to the carrierfrequency of the complex-valued SC-FDMA or CP-OFDM baseband signal foran antenna port and/or the complex-valued Physical Random Access CHannel(PRACH) baseband signal is shown in FIG. 4B. Filtering may be employedprior to transmission.

An example structure for downlink transmissions is shown in FIG. 4C. Thebaseband signal representing a downlink physical channel may perform oneor more functions. The one or more functions may comprise: scrambling ofcoded bits in a codeword to be transmitted on a physical channel;modulation of scrambled bits to generate complex-valued modulationsymbols; mapping of the complex-valued modulation symbols onto one orseveral transmission layers; precoding of the complex-valued modulationsymbols on a layer for transmission on the antenna ports; mapping ofcomplex-valued modulation symbols for an antenna port to resourceelements; generation of complex-valued time-domain OFDM signal for anantenna port; and/or the like. These functions are illustrated asexamples and it is anticipated that other mechanisms may be implementedin various embodiments.

In an example, a gNB may transmit a first symbol and a second symbol onan antenna port, to a wireless device. The wireless device may infer thechannel (e.g., fading gain, multipath delay, etc.) for conveying thesecond symbol on the antenna port, from the channel for conveying thefirst symbol on the antenna port. In an example, a first antenna portand a second antenna port may be quasi co-located if one or morelarge-scale properties of the channel over which a first symbol on thefirst antenna port is conveyed may be inferred from the channel overwhich a second symbol on a second antenna port is conveyed. The one ormore large-scale properties may comprise at least one of: delay spread;doppler spread; doppler shift; average gain; average delay; and/orspatial Receiving (Rx) parameters.

An example modulation and up-conversion to the carrier frequency of thecomplex-valued OFDM baseband signal for an antenna port is shown in FIG.4D. Filtering may be employed prior to transmission.

FIG. 5A is a diagram of an example uplink channel mapping and exampleuplink physical signals. FIG. 5B is a diagram of an example downlinkchannel mapping and a downlink physical signals. In an example, aphysical layer may provide one or more information transfer services toa MAC and/or one or more higher layers. For example, the physical layermay provide the one or more information transfer services to the MAC viaone or more transport channels. An information transfer service mayindicate how and with what characteristics data are transferred over theradio interface.

In an example embodiment, a radio network may comprise one or moredownlink and/or uplink transport channels. For example, a diagram inFIG. 5A shows example uplink transport channels comprising Uplink-SharedCHannel (UL-SCH) 501 and Random Access CHannel (RACH) 502. A diagram inFIG. 5B shows example downlink transport channels comprisingDownlink-Shared CHannel (DL-SCH) 511, Paging CHannel (PCH) 512, andBroadcast CHannel (BCH) 513. A transport channel may be mapped to one ormore corresponding physical channels. For example, UL-SCH 501 may bemapped to Physical Uplink Shared CHannel (PUSCH) 503. RACH 502 may bemapped to PRACH 505. DL-SCH 511 and PCH 512 may be mapped to PhysicalDownlink Shared CHannel (PDSCH) 514. BCH 513 may be mapped to PhysicalBroadcast CHannel (PBCH) 516.

There may be one or more physical channels without a correspondingtransport channel. The one or more physical channels may be employed forUplink Control Information (UCI) 509 and/or Downlink Control Information(DCI) 517. For example, Physical Uplink Control CHannel (PUCCH) 504 maycarry UCI 509 from a UE to a base station. For example, PhysicalDownlink Control CHannel (PDCCH) 515 may carry DCI 517 from a basestation to a UE. NR may support UCI 509 multiplexing in PUSCH 503 whenUCI 509 and PUSCH 503 transmissions may coincide in a slot at least inpart. The UCI 509 may comprise at least one of CSI, Acknowledgement(ACK)/Negative Acknowledgement (NACK), and/or scheduling request. TheDCI 517 on PDCCH 515 may indicate at least one of following: one or moredownlink assignments and/or one or more uplink scheduling grants

In uplink, a UE may transmit one or more Reference Signals (RSs) to abase station. For example, the one or more RSs may be at least one ofDemodulation-RS (DM-RS) 506, Phase Tracking-RS (PT-RS) 507, and/orSounding RS (SRS) 508. In downlink, a base station may transmit (e.g.,unicast, multicast, and/or broadcast) one or more RSs to a UE. Forexample, the one or more RSs may be at least one of PrimarySynchronization Signal (PSS)/Secondary Synchronization Signal (SSS) 521,CSI-RS 522, DM-RS 523, and/or PT-RS 524.

In an example, a UE may transmit one or more uplink DM-RSs 506 to a basestation for channel estimation, for example, for coherent demodulationof one or more uplink physical channels (e.g., PUSCH 503 and/or PUCCH504). For example, a UE may transmit a base station at least one uplinkDM-RS 506 with PUSCH 503 and/or PUCCH 504, wherein the at least oneuplink DM-RS 506 may be spanning a same frequency range as acorresponding physical channel. In an example, a base station mayconfigure a UE with one or more uplink DM-RS configurations. At leastone DM-RS configuration may support a front-loaded DM-RS pattern. Afront-loaded DM-RS may be mapped over one or more OFDM symbols (e.g., 1or 2 adjacent OFDM symbols). One or more additional uplink DM-RS may beconfigured to transmit at one or more symbols of a PUSCH and/or PUCCH. Abase station may semi-statistically configure a UE with a maximum numberof front-loaded DM-RS symbols for PUSCH and/or PUCCH. For example, a UEmay schedule a single-symbol DM-RS and/or double symbol DM-RS based on amaximum number of front-loaded DM-RS symbols, wherein a base station mayconfigure the UE with one or more additional uplink DM-RS for PUSCHand/or PUCCH. A new radio network may support, e.g., at least forCP-OFDM, a common DM-RS structure for DL and UL, wherein a DM-RSlocation, DM-RS pattern, and/or scrambling sequence may be same ordifferent.

In an example, whether uplink PT-RS 507 is present or not may depend onan RRC configuration. For example, a presence of uplink PT-RS may beUE-specifically configured. For example, a presence and/or a pattern ofuplink PT-RS 507 in a scheduled resource may be UE-specificallyconfigured by a combination of RRC signaling and/or association with oneor more parameters employed for other purposes (e.g., Modulation andCoding Scheme (MCS)) which may be indicated by DCI. When configured, adynamic presence of uplink PT-RS 507 may be associated with one or moreDCI parameters comprising at least MCS. A radio network may supportplurality of uplink PT-RS densities defined in time/frequency domain.When present, a frequency domain density may be associated with at leastone configuration of a scheduled bandwidth. A UE may assume a sameprecoding for a DMRS port and a PT-RS port. A number of PT-RS ports maybe fewer than a number of DM-RS ports in a scheduled resource. Forexample, uplink PT-RS 507 may be confined in the scheduledtime/frequency duration for a UE.

In an example, a UE may transmit SRS 508 to a base station for channelstate estimation to support uplink channel dependent scheduling and/orlink adaptation. For example, SRS 508 transmitted by a UE may allow fora base station to estimate an uplink channel state at one or moredifferent frequencies. A base station scheduler may employ an uplinkchannel state to assign one or more resource blocks of good quality foran uplink PUSCH transmission from a UE. A base station maysemi-statistically configure a UE with one or more SRS resource sets.For an SRS resource set, a base station may configure a UE with one ormore SRS resources. An SRS resource set applicability may be configuredby a higher layer (e.g., RRC) parameter. For example, when a higherlayer parameter indicates beam management, an SRS resource in each ofone or more SRS resource sets may be transmitted at a time instant. A UEmay transmit one or more SRS resources in different SRS resource setssimultaneously. A new radio network may support aperiodic, periodicand/or semi-persistent SRS transmissions. A UE may transmit SRSresources based on one or more trigger types, wherein the one or moretrigger types may comprise higher layer signaling (e.g., RRC) and/or oneor more DCI formats (e.g., at least one DCI format may be employed for aUE to select at least one of one or more configured SRS resource sets.An SRS trigger type 0 may refer to an SRS triggered based on a higherlayer signaling. An SRS trigger type 1 may refer to an SRS triggeredbased on one or more DCI formats. In an example, when PUSCH 503 and SRS508 are transmitted in a same slot, a UE may be configured to transmitSRS 508 after a transmission of PUSCH 503 and corresponding uplink DM-RS506.

In an example, a base station may semi-statistically configure a UE withone or more SRS configuration parameters indicating at least one offollowing: a SRS resource configuration identifier, a number of SRSports, time domain behavior of SRS resource configuration (e.g., anindication of periodic, semi-persistent, or aperiodic SRS), slot(mini-slot, and/or subframe) level periodicity and/or offset for aperiodic and/or aperiodic SRS resource, a number of OFDM symbols in aSRS resource, starting OFDM symbol of a SRS resource, a SRS bandwidth, afrequency hopping bandwidth, a cyclic shift, and/or a SRS sequence ID.

In an example, in a time domain, an SS/PBCH block may comprise one ormore OFDM symbols (e.g., 4 OFDM symbols numbered in increasing orderfrom 0 to 3) within the SS/PBCH block. An SS/PBCH block may comprisePSS/SSS 521 and PBCH 516. In an example, in the frequency domain, anSS/PBCH block may comprise one or more contiguous subcarriers (e.g., 240contiguous subcarriers with the subcarriers numbered in increasing orderfrom 0 to 239) within the SS/PBCH block. For example, a PSS/SSS 521 mayoccupy 1 OFDM symbol and 127 subcarriers. For example, PBCH 516 may spanacross 3 OFDM symbols and 240 subcarriers. A UE may assume that one ormore SS/PBCH blocks transmitted with a same block index may be quasico-located, e.g., with respect to Doppler spread, Doppler shift, averagegain, average delay, and spatial Rx parameters. A UE may not assumequasi co-location for other SS/PBCH block transmissions. A periodicityof an SS/PBCH block may be configured by a radio network (e.g., by anRRC signaling) and one or more time locations where the SS/PBCH blockmay be sent may be determined by sub-carrier spacing. In an example, aUE may assume a band-specific sub-carrier spacing for an SS/PBCH blockunless a radio network has configured a UE to assume a differentsub-carrier spacing.

In an example, downlink CSI-RS 522 may be employed for a UE to acquirechannel state information. A radio network may support periodic,aperiodic, and/or semi-persistent transmission of downlink CSI-RS 522.For example, a base station may semi-statistically configure and/orreconfigure a UE with periodic transmission of downlink CSI-RS 522. Aconfigured CSI-RS resources may be activated ad/or deactivated. Forsemi-persistent transmission, an activation and/or deactivation ofCSI-RS resource may be triggered dynamically. In an example, CSI-RSconfiguration may comprise one or more parameters indicating at least anumber of antenna ports. For example, a base station may configure a UEwith 32 ports. A base station may semi-statistically configure a UE withone or more CSI-RS resource sets. One or more CSI-RS resources may beallocated from one or more CSI-RS resource sets to one or more UEs. Forexample, a base station may semi-statistically configure one or moreparameters indicating CSI RS resource mapping, for example, time-domainlocation of one or more CSI-RS resources, a bandwidth of a CSI-RSresource, and/or a periodicity. In an example, a UE may be configured toemploy a same OFDM symbols for downlink CSI-RS 522 and control resourceset (coreset) when the downlink CSI-RS 522 and coreset are spatiallyquasi co-located and resource elements associated with the downlinkCSI-RS 522 are the outside of PRBs configured for coreset. In anexample, a UE may be configured to employ a same OFDM symbols fordownlink CSI-RS 522 and SS/PBCH blocks when the downlink CSI-RS 522 andSS/PBCH blocks are spatially quasi co-located and resource elementsassociated with the downlink CSI-RS 522 are the outside of PRBsconfigured for SS/PBCH blocks.

In an example, a UE may transmit one or more downlink DM-RSs 523 to abase station for channel estimation, for example, for coherentdemodulation of one or more downlink physical channels (e.g., PDSCH514). For example, a radio network may support one or more variableand/or configurable DM-RS patterns for data demodulation. At least onedownlink DM-RS configuration may support a front-loaded DM-RS pattern. Afront-loaded DM-RS may be mapped over one or more OFDM symbols (e.g., 1or 2 adjacent OFDM symbols). A base station may semi-statisticallyconfigure a UE with a maximum number of front-loaded DM-RS symbols forPDSCH 514. For example, a DM-RS configuration may support one or moreDM-RS ports. For example, for single user-MIMO, a DM-RS configurationmay support at least 8 orthogonal downlink DM-RS ports. For example, formultiuser-MIMO, a DM-RS configuration may support 12 orthogonal downlinkDM-RS ports. A radio network may support, e.g., at least for CP-OFDM, acommon DM-RS structure for DL and UL, wherein a DM-RS location, DM-RSpattern, and/or scrambling sequence may be same or different.

In an example, whether downlink PT-RS 524 is present or not may dependon an RRC configuration. For example, a presence of downlink PT-RS 524may be UE-specifically configured. For example, a presence and/or apattern of downlink PT-RS 524 in a scheduled resource may beUE-specifically configured by a combination of RRC signaling and/orassociation with one or more parameters employed for other purposes(e.g., MCS) which may be indicated by DCI. When configured, a dynamicpresence of downlink PT-RS 524 may be associated with one or more DCIparameters comprising at least MCS. A radio network may supportplurality of PT-RS densities defined in time/frequency domain. Whenpresent, a frequency domain density may be associated with at least oneconfiguration of a scheduled bandwidth. A UE may assume a same precodingfor a DMRS port and a PT-RS port. A number of PT-RS ports may be fewerthan a number of DM-RS ports in a scheduled resource. For example,downlink PT-RS 524 may be confined in the scheduled time/frequencyduration for a UE.

FIG. 6 is a diagram depicting an example transmission time and receptiontime for a carrier as per an aspect of an embodiment of the presentdisclosure. A multicarrier OFDM communication system may include one ormore carriers, for example, ranging from 1 to 32 carriers, in case ofcarrier aggregation, or ranging from 1 to 64 carriers, in case of dualconnectivity. Different radio frame structures may be supported (e.g.,for FDD and for TDD duplex mechanisms). FIG. 6 shows an example frametiming. Downlink and uplink transmissions may be organized into radioframes 601. In this example, radio frame duration is 10 ms. In thisexample, a 10 ms radio frame 601 may be divided into ten equally sizedsubframes 602 with 1 ms duration. Subframe(s) may comprise one or moreslots (e.g. slots 603 and 605) depending on subcarrier spacing and/or CPlength. For example, a subframe with 15 kHz, 30 kHz, 60 kHz, 120 kHz,240 kHz and 480 kHz subcarrier spacing may comprise one, two, four,eight, sixteen and thirty-two slots, respectively. In FIG. 6, a subframemay be divided into two equally sized slots 603 with 0.5 ms duration.For example, 10 subframes may be available for downlink transmission and10 subframes may be available for uplink transmissions in a 10 msinterval. Uplink and downlink transmissions may be separated in thefrequency domain. Slot(s) may include a plurality of OFDM symbols 604.The number of OFDM symbols 604 in a slot 605 may depend on the cyclicprefix length. For example, a slot may be 14 OFDM symbols for the samesubcarrier spacing of up to 480 kHz with normal CP. A slot may be 12OFDM symbols for the same subcarrier spacing of 60 kHz with extended CP.A slot may contain downlink, uplink, or a downlink part and an uplinkpart and/or alike.

FIG. 7A is a diagram depicting example sets of OFDM subcarriers as peran aspect of an embodiment of the present disclosure. In the example, agNB may communicate with a wireless device with a carrier with anexample channel bandwidth 700. Arrow(s) in the diagram may depict asubcarrier in a multicarrier OFDM system. The OFDM system may usetechnology such as OFDM technology, SC-FDMA technology, and/or the like.In an example, an arrow 701 shows a subcarrier transmitting informationsymbols. In an example, a subcarrier spacing 702, between two contiguoussubcarriers in a carrier, may be any one of 15 KHz, 30 KHz, 60 KHz, 120KHz, 240 KHz etc. In an example, different subcarrier spacing maycorrespond to different transmission numerologies. In an example, atransmission numerology may comprise at least: a numerology index; avalue of subcarrier spacing; a type of cyclic prefix (CP). In anexample, a gNB may transmit to/receive from a UE on a number ofsubcarriers 703 in a carrier. In an example, a bandwidth occupied by anumber of subcarriers 703 (transmission bandwidth) may be smaller thanthe channel bandwidth 700 of a carrier, due to guard band 704 and 705.In an example, a guard band 704 and 705 may be used to reduceinterference to and from one or more neighbor carriers. A number ofsubcarriers (transmission bandwidth) in a carrier may depend on thechannel bandwidth of the carrier and the subcarrier spacing. Forexample, a transmission bandwidth, for a carrier with 20 MHz channelbandwidth and 15 KHz subcarrier spacing, may be in number of 1024subcarriers.

In an example, a gNB and a wireless device may communicate with multipleCCs when configured with CA. In an example, different component carriersmay have different bandwidth and/or subcarrier spacing, if CA issupported. In an example, a gNB may transmit a first type of service toa UE on a first component carrier. The gNB may transmit a second type ofservice to the UE on a second component carrier. Different type ofservices may have different service requirement (e.g., data rate,latency, reliability), which may be suitable for transmission viadifferent component carrier having different subcarrier spacing and/orbandwidth. FIG. 7B shows an example embodiment. A first componentcarrier may comprise a first number of subcarriers 706 with a firstsubcarrier spacing 709. A second component carrier may comprise a secondnumber of subcarriers 707 with a second subcarrier spacing 710. A thirdcomponent carrier may comprise a third number of subcarriers 708 with athird subcarrier spacing 711. Carriers in a multicarrier OFDMcommunication system may be contiguous carriers, non-contiguouscarriers, or a combination of both contiguous and non-contiguouscarriers.

FIG. 8 is a diagram depicting OFDM radio resources as per an aspect ofan embodiment of the present disclosure. In an example, a carrier mayhave a transmission bandwidth 801. In an example, a resource grid may bein a structure of frequency domain 802 and time domain 803. In anexample, a resource grid may comprise a first number of OFDM symbols ina subframe and a second number of resource blocks, starting from acommon resource block indicated by higher-layer signaling (e.g. RRCsignaling), for a transmission numerology and a carrier. In an example,in a resource grid, a resource unit identified by a subcarrier index anda symbol index may be a resource element 805. In an example, a subframemay comprise a first number of OFDM symbols 807 depending on anumerology associated with a carrier. For example, when a subcarrierspacing of a numerology of a carrier is 15 KHz, a subframe may have 14OFDM symbols for a carrier. When a subcarrier spacing of a numerology is30 KHz, a subframe may have 28 OFDM symbols. When a subcarrier spacingof a numerology is 60 Khz, a subframe may have 56 OFDM symbols, etc. Inan example, a second number of resource blocks comprised in a resourcegrid of a carrier may depend on a bandwidth and a numerology of thecarrier.

As shown in FIG. 8, a resource block 806 may comprise 12 subcarriers. Inan example, multiple resource blocks may be grouped into a ResourceBlock Group (RBG) 804. In an example, a size of an RBG may depend on atleast one of: an RRC message indicating an RBG size configuration; asize of a carrier bandwidth; or a size of a bandwidth part of a carrier.In an example, a carrier may comprise multiple bandwidth parts. A firstbandwidth part of a carrier may have different frequency location and/orbandwidth from a second bandwidth part of the carrier.

In an example, a gNB may transmit a downlink control informationcomprising a downlink or uplink resource block assignment to a wirelessdevice. A base station may transmit to or receive from, a wirelessdevice, data packets (e.g. transport blocks) scheduled and transmittedvia one or more resource blocks and one or more slots according toparameters in a downlink control information and/or RRC message(s). Inan example, a starting symbol relative to a first slot of the one ormore slots may be indicated to the wireless device. In an example, a gNBmay transmit to or receive from, a wireless device, data packetsscheduled on one or more RBGs and one or more slots.

In an example, a gNB may transmit a downlink control informationcomprising a downlink assignment to a wireless device via one or morePDCCHs. The downlink assignment may comprise parameters indicating atleast modulation and coding format; resource allocation; and/or HARQinformation related to DL-SCH. In an example, a resource allocation maycomprise parameters of resource block allocation; and/or slotallocation. In an example, a gNB may dynamically allocate resources to awireless device via a Cell-Radio Network Temporary Identifier (C-RNTI)on one or more PDCCHs. The wireless device may monitor the one or morePDCCHs in order to find possible allocation when its downlink receptionis enabled. The wireless device may receive one or more downlink datapackage on one or more PDSCH scheduled by the one or more PDCCHs, whensuccessfully detecting the one or more PDCCHs.

In an example, a gNB may allocate Configured Scheduling (CS) resourcesfor down link transmission to a wireless device. The gNB may transmitone or more RRC messages indicating a periodicity of the CS grant. ThegNB may transmit a DCI via a PDCCH addressed to a ConfiguredScheduling-RNTI (CS-RNTI) activating the CS resources. The DCI maycomprise parameters indicating that the downlink grant is a CS grant.The CS grant may be implicitly reused according to the periodicitydefined by the one or more RRC messages, until deactivated.

In an example, a gNB may transmit a downlink control informationcomprising an uplink grant to a wireless device via one or more PDCCHs.The uplink grant may comprise parameters indicating at least modulationand coding format; resource allocation; and/or HARQ information relatedto UL-SCH. In an example, a resource allocation may comprise parametersof resource block allocation; and/or slot allocation. In an example, agNB may dynamically allocate resources to a wireless device via a C-RNTIon one or more PDCCHs. The wireless device may monitor the one or morePDCCHs in order to find possible resource allocation. The wirelessdevice may transmit one or more uplink data package via one or morePUSCH scheduled by the one or more PDCCHs, when successfully detectingthe one or more PDCCHs.

In an example, a gNB may allocate CS resources for uplink datatransmission to a wireless device. The gNB may transmit one or more RRCmessages indicating a periodicity of the CS grant. The gNB may transmita DCI via a PDCCH addressed to a CS-RNTI activating the CS resources.The DCI may comprise parameters indicating that the uplink grant is a CSgrant. The CS grant may be implicitly reused according to theperiodicity defined by the one or more RRC message, until deactivated.

In an example, a base station may transmit DCI/control signaling viaPDCCH. The DCI may take a format in a plurality of formats. A DCI maycomprise downlink and/or uplink scheduling information (e.g., resourceallocation information, HARQ related parameters, MCS), request for CSI(e.g., aperiodic CQI reports), request for SRS, uplink power controlcommands for one or more cells, one or more timing information (e.g., TBtransmission/reception timing, HARQ feedback timing, etc.), etc. In anexample, a DCI may indicate an uplink grant comprising transmissionparameters for one or more transport blocks. In an example, a DCI mayindicate downlink assignment indicating parameters for receiving one ormore transport blocks. In an example, a DCI may be used by base stationto initiate a contention-free random access at the wireless device. Inan example, the base station may transmit a DCI comprising slot formatindicator (SFI) notifying a slot format. In an example, the base stationmay transmit a DCI comprising pre-emption indication notifying thePRB(s) and/or OFDM symbol(s) where a UE may assume no transmission isintended for the UE. In an example, the base station may transmit a DCIfor group power control of PUCCH or PUSCH or SRS. In an example, a DCImay correspond to an RNTI. In an example, the wireless device may obtainan RNTI in response to completing the initial access (e.g., C-RNTI). Inan example, the base station may configure an RNTI for the wireless(e.g., CS-RNTI, TPC-CS-RNTI, TPC-PUCCH-RNTI, TPC-PUSCH-RNTI,TPC-SRS-RNTI). In an example, the wireless device may compute an RNTI(e.g., the wireless device may compute RA-RNTI based on resources usedfor transmission of a preamble). In an example, an RNTI may have apre-configured value (e.g., P-RNTI or SI-RNTI). In an example, awireless device may monitor a group common search space which may beused by base station for transmitting DCIs that are intended for a groupof UEs. In an example, a group common DCI may correspond to an RNTIwhich is commonly configured for a group of UEs. In an example, awireless device may monitor a UE-specific search space. In an example, aUE specific DCI may correspond to an RNTI configured for the wirelessdevice.

A NR system may support a single beam operation and/or a multi-beamoperation. In a multi-beam operation, a base station may perform adownlink beam sweeping to provide coverage for common control channelsand/or downlink SS blocks, which may comprise at least a PSS, a SSS,and/or PBCH. A wireless device may measure quality of a beam pair linkusing one or more RSs. One or more SS blocks, or one or more CSI-RSresources, associated with a CSI-RS resource index (CRI), or one or moreDM-RSs of PBCH, may be used as RS for measuring quality of a beam pairlink. Quality of a beam pair link may be defined as a reference signalreceived power (RSRP) value, or a reference signal received quality(RSRQ) value, and/or a CSI value measured on RS resources. The basestation may indicate whether an RS resource, used for measuring a beampair link quality, is quasi-co-located (QCLed) with DM-RSs of a controlchannel. A RS resource and DM-RSs of a control channel may be calledQCLed when a channel characteristic from a transmission on an RS to awireless device, and that from a transmission on a control channel to awireless device, are similar or same under a configured criterion. In amulti-beam operation, a wireless device may perform an uplink beamsweeping to access a cell.

In an example, a wireless device may be configured to monitor PDCCH onone or more beam pair links simultaneously depending on a capability ofa wireless device. This may increase robustness against beam pair linkblocking. A base station may transmit one or more messages to configurea wireless device to monitor PDCCH on one or more beam pair links indifferent PDCCH OFDM symbols. For example, a base station may transmithigher layer signaling (e.g. RRC signaling) or MAC CE comprisingparameters related to the Rx beam setting of a wireless device formonitoring PDCCH on one or more beam pair links. A base station maytransmit indication of spatial QCL assumption between an DL RS antennaport(s) (for example, cell-specific CSI-RS, or wireless device-specificCSI-RS, or SS block, or PBCH with or without DM-RSs of PBCH), and DL RSantenna port(s) for demodulation of DL control channel. Signaling forbeam indication for a PDCCH may be MAC CE signaling, or RRC signaling,or DCI signaling, or specification-transparent and/or implicit method,and combination of these signaling methods.

For reception of unicast DL data channel, a base station may indicatespatial QCL parameters between DL RS antenna port(s) and DM-RS antennaport(s) of DL data channel. The base station may transmit DCI (e.g.downlink grants) comprising information indicating the RS antennaport(s). The information may indicate RS antenna port(s) which may beQCLed with the DM-RS antenna port(s). Different set of DM-RS antennaport(s) for a DL data channel may be indicated as QCL with different setof the RS antenna port(s).

FIG. 9A is an example of beam sweeping in a DL channel. In anRRC_INACTIVE state or RRC_IDLE state, a wireless device may assume thatSS blocks form an SS burst 940, and an SS burst set 950. The SS burstset 950 may have a given periodicity. For example, in a multi-beamoperation, a base station 120 may transmit SS blocks in multiple beams,together forming a SS burst 940. One or more SS blocks may betransmitted on one beam. If multiple SS bursts 940 are transmitted withmultiple beams, SS bursts together may form SS burst set 950.

A wireless device may further use CSI-RS in the multi-beam operation forestimating a beam quality of a links between a wireless device and abase station. A beam may be associated with a CSI-RS. For example, awireless device may, based on a RSRP measurement on CSI-RS, report abeam index, as indicated in a CRI for downlink beam selection, andassociated with a RSRP value of a beam. A CSI-RS may be transmitted on aCSI-RS resource including at least one of one or more antenna ports, oneor more time or frequency radio resources. A CSI-RS resource may beconfigured in a cell-specific way by common RRC signaling, or in awireless device-specific way by dedicated RRC signaling, and/or L1/L2signaling. Multiple wireless devices covered by a cell may measure acell-specific CSI-RS resource. A dedicated subset of wireless devicescovered by a cell may measure a wireless device-specific CSI-RSresource.

A CSI-RS resource may be transmitted periodically, or using aperiodictransmission, or using a multi-shot or semi-persistent transmission. Forexample, in a periodic transmission in FIG. 9A, a base station 120 maytransmit configured CSI-RS resources 940 periodically using a configuredperiodicity in a time domain. In an aperiodic transmission, a configuredCSI-RS resource may be transmitted in a dedicated time slot. In amulti-shot or semi-persistent transmission, a configured CSI-RS resourcemay be transmitted within a configured period. Beams used for CSI-RStransmission may have different beam width than beams used for SS-blockstransmission.

FIG. 9B is an example of a beam management procedure in an example newradio network. A base station 120 and/or a wireless device 110 mayperform a downlink L1/L2 beam management procedure. One or more of thefollowing downlink L1/L2 beam management procedures may be performedwithin one or more wireless devices 110 and one or more base stations120. In an example, a P-1 procedure 910 may be used to enable thewireless device 110 to measure one or more Transmission (Tx) beamsassociated with the base station 120 to support a selection of a firstset of Tx beams associated with the base station 120 and a first set ofRx beam(s) associated with a wireless device 110. For beamforming at abase station 120, a base station 120 may sweep a set of different TXbeams. For beamforming at a wireless device 110, a wireless device 110may sweep a set of different Rx beams. In an example, a P-2 procedure920 may be used to enable a wireless device 110 to measure one or moreTx beams associated with a base station 120 to possibly change a firstset of Tx beams associated with a base station 120. A P-2 procedure 920may be performed on a possibly smaller set of beams for beam refinementthan in the P-1 procedure 910. A P-2 procedure 920 may be a special caseof a P-1 procedure 910. In an example, a P-3 procedure 930 may be usedto enable a wireless device 110 to measure at least one Tx beamassociated with a base station 120 to change a first set of Rx beamsassociated with a wireless device 110.

A wireless device 110 may transmit one or more beam management reportsto a base station 120. In one or more beam management reports, awireless device 110 may indicate some beam pair quality parameters,comprising at least, one or more beam identifications; RSRP; PrecodingMatrix Indicator (PMI)/Channel Quality Indicator (CQI)/Rank Indicator(RI) of a subset of configured beams. Based on one or more beammanagement reports, a base station 120 may transmit to a wireless device110 a signal indicating that one or more beam pair links are one or moreserving beams. A base station 120 may transmit PDCCH and PDSCH for awireless device 110 using one or more serving beams.

In an example embodiment, new radio network may support a BandwidthAdaptation (BA). In an example, receive and/or transmit bandwidthsconfigured by a UE employing a BA may not be large. For example, areceive and/or transmit bandwidths may not be as large as a bandwidth ofa cell. Receive and/or transmit bandwidths may be adjustable. Forexample, a UE may change receive and/or transmit bandwidths, e.g., toshrink during period of low activity to save power. For example, a UEmay change a location of receive and/or transmit bandwidths in afrequency domain, e.g. to increase scheduling flexibility. For example,a UE may change a subcarrier spacing, e.g. to allow different services.

In an example embodiment, a subset of a total cell bandwidth of a cellmay be referred to as a Bandwidth Part (BWP). A base station mayconfigure a UE with one or more BWPs to achieve a BA. For example, abase station may indicate, to a UE, which of the one or more(configured) BWPs is an active BWP.

FIG. 10 is an example diagram of 3 BWPs configured: BWP1 (1010 and 1050)with a width of 40 MHz and subcarrier spacing of 15 kHz; BWP2 (1020 and1040) with a width of 10 MHz and subcarrier spacing of 15 kHz; BWP3 1030with a width of 20 MHz and subcarrier spacing of 60 kHz.

In an example, a UE, configured for operation in one or more BWPs of acell, may be configured by one or more higher layers (e.g. RRC layer)for a cell a set of one or more BWPs (e.g., at most four BWPs) forreceptions by the UE (DL BWP set) in a DL bandwidth by at least oneparameter DL-BWP and a set of one or more BWPs (e.g., at most four BWPs)for transmissions by a UE (UL BWP set) in an UL bandwidth by at leastone parameter UL-BWP for a cell.

To enable BA on the PCell, a base station may configure a UE with one ormore UL and DL BWP pairs. To enable BA on SCells (e.g., in case of CA),a base station may configure a UE at least with one or more DL BWPs(e.g., there may be none in an UL).

In an example, an initial active DL BWP may be defined by at least oneof a location and number of contiguous PRBs, a subcarrier spacing, or acyclic prefix, for a control resource set for at least one common searchspace. For operation on the PCell, one or more higher layer parametersmay indicate at least one initial UL BWP for a random access procedure.If a UE is configured with a secondary carrier on a primary cell, the UEmay be configured with an initial BWP for random access procedure on asecondary carrier.

In an example, for unpaired spectrum operation, a UE may expect that acenter frequency for a DL BWP may be same as a center frequency for a ULBWP.

For example, for a DL BWP or an UL BWP in a set of one or more DL BWPsor one or more UL BWPs, respectively, a base station maysemi-statistically configure a UE for a cell with one or more parametersindicating at least one of following: a subcarrier spacing; a cyclicprefix; a number of contiguous PRBs; an index in the set of one or moreDL BWPs and/or one or more UL BWPs; a link between a DL BWP and an ULBWP from a set of configured DL BWPs and UL BWPs; a DCI detection to aPDSCH reception timing; a PDSCH reception to a HARQ-ACK transmissiontiming value; a DCI detection to a PUSCH transmission timing value; anoffset of a first PRB of a DL bandwidth or an UL bandwidth,respectively, relative to a first PRB of a bandwidth.

In an example, for a DL BWP in a set of one or more DL BWPs on a PCell,a base station may configure a UE with one or more control resource setsfor at least one type of common search space and/or one UE-specificsearch space. For example, a base station may not configure a UE withouta common search space on a PCell, or on a PSCell, in an active DL BWP.

For an UL BWP in a set of one or more UL BWPs, a base station mayconfigure a UE with one or more resource sets for one or more PUCCHtransmissions.

In an example, if a DCI comprises a BWP indicator field, a BWP indicatorfield value may indicate an active DL BWP, from a configured DL BWP set,for one or more DL receptions. If a DCI comprises a BWP indicator field,a BWP indicator field value may indicate an active UL BWP, from aconfigured UL BWP set, for one or more UL transmissions.

In an example, for a PCell, a base station may semi-statisticallyconfigure a UE with a default DL BWP among configured DL BWPs. If a UEis not provided a default DL BWP, a default BWP may be an initial activeDL BWP.

In an example, a base station may configure a UE with a timer value fora PCell. For example, a UE may start a timer, referred to as BWPinactivity timer, when a UE detects a DCI indicating an active DL BWP,other than a default DL BWP, for a paired spectrum operation or when aUE detects a DCI indicating an active DL BWP or UL BWP, other than adefault DL BWP or UL BWP, for an unpaired spectrum operation. The UE mayincrement the timer by an interval of a first value (e.g., the firstvalue may be 1 millisecond or 0.5 milliseconds) if the UE does notdetect a DCI during the interval for a paired spectrum operation or foran unpaired spectrum operation. In an example, the timer may expire whenthe timer is equal to the timer value. A UE may switch to the default DLBWP from an active DL BWP when the timer expires.

In an example, a base station may semi-statistically configure a UE withone or more BWPs. A UE may switch an active BWP from a first BWP to asecond BWP in response to receiving a DCI indicating the second BWP asan active BWP and/or in response to an expiry of BWP inactivity timer(for example, the second BWP may be a default BWP). For example, FIG. 10is an example diagram of 3 BWPs configured, BWP1 (1010 and 1050), BWP2(1020 and 1040), and BWP3 (1030). BWP2 (1020 and 1040) may be a defaultBWP. BWP1 (1010) may be an initial active BWP. In an example, a UE mayswitch an active BWP from BWP1 1010 to BWP2 1020 in response to anexpiry of BWP inactivity timer. For example, a UE may switch an activeBWP from BWP2 1020 to BWP3 1030 in response to receiving a DCIindicating BWP3 1030 as an active BWP. Switching an active BWP from BWP31030 to BWP2 1040 and/or from BWP2 1040 to BWP1 1050 may be in responseto receiving a DCI indicating an active BWP and/or in response to anexpiry of BWP inactivity timer.

In an example, if a UE is configured for a secondary cell with a defaultDL BWP among configured DL BWPs and a timer value, UE procedures on asecondary cell may be same as on a primary cell using the timer valuefor the secondary cell and the default DL BWP for the secondary cell.

In an example, if a base station configures a UE with a first active DLBWP and a first active UL BWP on a secondary cell or carrier, a UE mayemploy an indicated DL BWP and an indicated UL BWP on a secondary cellas a respective first active DL BWP and first active UL BWP on asecondary cell or carrier.

FIG. 11A and FIG. 11B show packet flows employing a multi connectivity(e.g. dual connectivity, multi connectivity, tight interworking, and/orthe like). FIG. 11A is an example diagram of a protocol structure of awireless device 110 (e.g. UE) with CA and/or multi connectivity as peran aspect of an embodiment. FIG. 11B is an example diagram of a protocolstructure of multiple base stations with CA and/or multi connectivity asper an aspect of an embodiment. The multiple base stations may comprisea master node, MN 1130 (e.g. a master node, a master base station, amaster gNB, a master eNB, and/or the like) and a secondary node, SN 1150(e.g. a secondary node, a secondary base station, a secondary gNB, asecondary eNB, and/or the like). A master node 1130 and a secondary node1150 may co-work to communicate with a wireless device 110.

When multi connectivity is configured for a wireless device 110, thewireless device 110, which may support multiple reception/transmissionfunctions in an RRC connected state, may be configured to utilize radioresources provided by multiple schedulers of a multiple base stations.Multiple base stations may be inter-connected via a non-ideal or idealbackhaul (e.g. Xn interface, X2 interface, and/or the like). A basestation involved in multi connectivity for a certain wireless device mayperform at least one of two different roles: a base station may eitheract as a master base station or as a secondary base station. In multiconnectivity, a wireless device may be connected to one master basestation and one or more secondary base stations. In an example, a masterbase station (e.g. the MN 1130) may provide a master cell group (MCG)comprising a primary cell and/or one or more secondary cells for awireless device (e.g. the wireless device 110). A secondary base station(e.g. the SN 1150) may provide a secondary cell group (SCG) comprising aprimary secondary cell (PSCell) and/or one or more secondary cells for awireless device (e.g. the wireless device 110).

In multi connectivity, a radio protocol architecture that a beareremploys may depend on how a bearer is setup. In an example, threedifferent type of bearer setup options may be supported: an MCG bearer,an SCG bearer, and/or a split bearer. A wireless device mayreceive/transmit packets of an MCG bearer via one or more cells of theMCG, and/or may receive/transmits packets of an SCG bearer via one ormore cells of an SCG. Multi-connectivity may also be described as havingat least one bearer configured to use radio resources provided by thesecondary base station. Multi-connectivity may or may not beconfigured/implemented in some of the example embodiments.

In an example, a wireless device (e.g. Wireless Device 110) may transmitand/or receive: packets of an MCG bearer via an SDAP layer (e.g. SDAP1110), a PDCP layer (e.g. NR PDCP 1111), an RLC layer (e.g. MN RLC1114), and a MAC layer (e.g. MN MAC 1118); packets of a split bearer viaan SDAP layer (e.g. SDAP 1110), a PDCP layer (e.g. NR PDCP 1112), one ofa master or secondary RLC layer (e.g. MN RLC 1115, SN RLC 1116), and oneof a master or secondary MAC layer (e.g. MN MAC 1118, SN MAC 1119);and/or packets of an SCG bearer via an SDAP layer (e.g. SDAP 1110), aPDCP layer (e.g. NR PDCP 1113), an RLC layer (e.g. SN RLC 1117), and aMAC layer (e.g. MN MAC 1119).

In an example, a master base station (e.g. MN 1130) and/or a secondarybase station (e.g. SN 1150) may transmit/receive: packets of an MCGbearer via a master or secondary node SDAP layer (e.g. SDAP 1120, SDAP1140), a master or secondary node PDCP layer (e.g. NR PDCP 1121, NR PDCP1142), a master node RLC layer (e.g. MN RLC 1124, MN RLC 1125), and amaster node MAC layer (e.g. MN MAC 1128); packets of an SCG bearer via amaster or secondary node SDAP layer (e.g. SDAP 1120, SDAP 1140), amaster or secondary node PDCP layer (e.g. NR PDCP 1122, NR PDCP 1143), asecondary node RLC layer (e.g. SN RLC 1146, SN RLC 1147), and asecondary node MAC layer (e.g. SN MAC 1148); packets of a split bearervia a master or secondary node SDAP layer (e.g. SDAP 1120, SDAP 1140), amaster or secondary node PDCP layer (e.g. NR PDCP 1123, NR PDCP 1141), amaster or secondary node RLC layer (e.g. MN RLC 1126, SN RLC 1144, SNRLC 1145, MN RLC 1127), and a master or secondary node MAC layer (e.g.MN MAC 1128, SN MAC 1148).

In multi connectivity, a wireless device may configure multiple MACentities: one MAC entity (e.g. MN MAC 1118) for a master base station,and other MAC entities (e.g. SN MAC 1119) for a secondary base station.In multi-connectivity, a configured set of serving cells for a wirelessdevice may comprise two subsets: an MCG comprising serving cells of amaster base station, and SCGs comprising serving cells of a secondarybase station. For an SCG, one or more of following configurations may beapplied: at least one cell of an SCG has a configured UL CC and at leastone cell of a SCG, named as primary secondary cell (PSCell, PCell ofSCG, or sometimes called PCell), is configured with PUCCH resources;when an SCG is configured, there may be at least one SCG bearer or oneSplit bearer; upon detection of a physical layer problem or a randomaccess problem on a PSCell, or a number of NR RLC retransmissions hasbeen reached associated with the SCG, or upon detection of an accessproblem on a PSCell during a SCG addition or a SCG change: an RRCconnection re-establishment procedure may not be triggered, ULtransmissions towards cells of an SCG may be stopped, a master basestation may be informed by a wireless device of a SCG failure type, forsplit bearer, a DL data transfer over a master base station may bemaintained; an NR RLC acknowledged mode (AM) bearer may be configuredfor a split bearer; PCell and/or PSCell may not be de-activated; PSCellmay be changed with a SCG change procedure (e.g. with security keychange and a RACH procedure); and/or a bearer type change between asplit bearer and a SCG bearer or simultaneous configuration of a SCG anda split bearer may or may not supported.

With respect to interaction between a master base station and asecondary base stations for multi-connectivity, one or more of thefollowing may be applied: a master base station and/or a secondary basestation may maintain Radio Resource Management (RRM) measurementconfigurations of a wireless device; a master base station may (e.g.based on received measurement reports, traffic conditions, and/or bearertypes) may decide to request a secondary base station to provideadditional resources (e.g. serving cells) for a wireless device; uponreceiving a request from a master base station, a secondary base stationmay create/modify a container that may result in configuration ofadditional serving cells for a wireless device (or decide that thesecondary base station has no resource available to do so); for a UEcapability coordination, a master base station may provide (a part of)an AS configuration and UE capabilities to a secondary base station; amaster base station and a secondary base station may exchangeinformation about a UE configuration by employing of RRC containers(inter-node messages) carried via Xn messages; a secondary base stationmay initiate a reconfiguration of the secondary base station existingserving cells (e.g. PUCCH towards the secondary base station); asecondary base station may decide which cell is a PSCell within a SCG; amaster base station may or may not change content of RRC configurationsprovided by a secondary base station; in case of a SCG addition and/or aSCG SCell addition, a master base station may provide recent (or thelatest) measurement results for SCG cell(s); a master base station andsecondary base stations may receive information of SFN and/or subframeoffset of each other from OAM and/or via an Xn interface, (e.g. for apurpose of DRX alignment and/or identification of a measurement gap). Inan example, when adding a new SCG SCell, dedicated RRC signaling may beused for sending required system information of a cell as for CA, exceptfor an SFN acquired from a MIB of a PSCell of a SCG.

FIG. 12 is an example diagram of a random access procedure. One or moreevents may trigger a random access procedure. For example, one or moreevents may be at least one of following: initial access from RRC_IDLE,RRC connection re-establishment procedure, handover, DL or UL dataarrival during RRC_CONNECTED when UL synchronization status isnon-synchronized, transition from RRC_Inactive, and/or request for othersystem information. For example, a PDCCH order, a MAC entity, and/or abeam failure indication may initiate a random access procedure.

In an example embodiment, a random access procedure may be at least oneof a contention based random access procedure and a contention freerandom access procedure. For example, a contention based random accessprocedure may comprise, one or more Msg 1 1220 transmissions, one ormore Msg2 1230 transmissions, one or more Msg3 1240 transmissions, andcontention resolution 1250. For example, a contention free random accessprocedure may comprise one or more Msg 1 1220 transmissions and one ormore Msg2 1230 transmissions.

In an example, a base station may transmit (e.g., unicast, multicast, orbroadcast), to a UE, a RACH configuration 1210 via one or more beams.The RACH configuration 1210 may comprise one or more parametersindicating at least one of following: available set of PRACH resourcesfor a transmission of a random access preamble, initial preamble power(e.g., random access preamble initial received target power), an RSRPthreshold for a selection of a SS block and corresponding PRACHresource, a power-ramping factor (e.g., random access preamble powerramping step), random access preamble index, a maximum number ofpreamble transmission, preamble group A and group B, a threshold (e.g.,message size) to determine the groups of random access preambles, a setof one or more random access preambles for system information requestand corresponding PRACH resource(s), if any, a set of one or more randomaccess preambles for beam failure recovery request and correspondingPRACH resource(s), if any, a time window to monitor RA response(s), atime window to monitor response(s) on beam failure recovery request,and/or a contention resolution timer.

In an example, the Msg1 1220 may be one or more transmissions of arandom access preamble. For a contention based random access procedure,a UE may select a SS block with a RSRP above the RSRP threshold. Ifrandom access preambles group B exists, a UE may select one or morerandom access preambles from a group A or a group B depending on apotential Msg3 1240 size. If a random access preambles group B does notexist, a UE may select the one or more random access preambles from agroup A. A UE may select a random access preamble index randomly (e.g.with equal probability or a normal distribution) from one or more randomaccess preambles associated with a selected group. If a base stationsemi-statistically configures a UE with an association between randomaccess preambles and SS blocks, the UE may select a random accesspreamble index randomly with equal probability from one or more randomaccess preambles associated with a selected SS block and a selectedgroup.

For example, a UE may initiate a contention free random access procedurebased on a beam failure indication from a lower layer. For example, abase station may semi-statistically configure a UE with one or morecontention free PRACH resources for beam failure recovery requestassociated with at least one of SS blocks and/or CSI-RSs. If at leastone of SS blocks with a RSRP above a first RSRP threshold amongstassociated SS blocks or at least one of CSI-RSs with a RSRP above asecond RSRP threshold amongst associated CSI-RSs is available, a UE mayselect a random access preamble index corresponding to a selected SSblock or CSI-RS from a set of one or more random access preambles forbeam failure recovery request.

For example, a UE may receive, from a base station, a random accesspreamble index via PDCCH or RRC for a contention free random accessprocedure. If a base station does not configure a UE with at least onecontention free PRACH resource associated with SS blocks or CSI-RS, theUE may select a random access preamble index. If a base stationconfigures a UE with one or more contention free PRACH resourcesassociated with SS blocks and at least one SS block with a RSRP above afirst RSRP threshold amongst associated SS blocks is available, the UEmay select the at least one SS block and select a random access preamblecorresponding to the at least one SS block. If a base station configuresa UE with one or more contention free PRACH resources associated withCSI-RSs and at least one CSI-RS with a RSRP above a second RSPRthreshold amongst the associated CSI-RSs is available, the UE may selectthe at least one CSI-RS and select a random access preamblecorresponding to the at least one CSI-RS.

A UE may perform one or more Msg1 1220 transmissions by transmitting theselected random access preamble. For example, if a UE selects an SSblock and is configured with an association between one or more PRACHoccasions and one or more SS blocks, the UE may determine an PRACHoccasion from one or more PRACH occasions corresponding to a selected SSblock. For example, if a UE selects a CSI-RS and is configured with anassociation between one or more PRACH occasions and one or more CSI-RSs,the UE may determine a PRACH occasion from one or more PRACH occasionscorresponding to a selected CSI-RS. A UE may transmit, to a basestation, a selected random access preamble via a selected PRACHoccasions. A UE may determine a transmit power for a transmission of aselected random access preamble at least based on an initial preamblepower and a power-ramping factor. A UE may determine a RA-RNTIassociated with a selected PRACH occasions in which a selected randomaccess preamble is transmitted. For example, a UE may not determine aRA-RNTI for a beam failure recovery request. A UE may determine anRA-RNTI at least based on an index of a first OFDM symbol and an indexof a first slot of a selected PRACH occasions, and/or an uplink carrierindex for a transmission of Msg1 1220.

In an example, a UE may receive, from a base station, a random accessresponse, Msg 2 1230. A UE may start a time window (e.g., ra-ResponseWindow) to monitor a random access response. For beam failure recoveryrequest, a base station may configure a UE with a different time window(e.g., bfr-Response Window) to monitor response on beam failure recoveryrequest. For example, a UE may start a time window (e.g.,ra-ResponseWindow or bfr-Response Window) at a start of a first PDCCHoccasion after a fixed duration of one or more symbols from an end of apreamble transmission. If a UE transmits multiple preambles, the UE maystart a time window at a start of a first PDCCH occasion after a fixedduration of one or more symbols from an end of a first preambletransmission. A UE may monitor a PDCCH of a cell for at least one randomaccess response identified by a RA-RNTI or for at least one response tobeam failure recovery request identified by a C-RNTI while a timer for atime window is running.

In an example, a UE may consider a reception of random access responsesuccessful if at least one random access response comprises a randomaccess preamble identifier corresponding to a random access preambletransmitted by the UE. A UE may consider the contention free randomaccess procedure successfully completed if a reception of random accessresponse is successful. If a contention free random access procedure istriggered for a beam failure recovery request, a UE may consider acontention free random access procedure successfully complete if a PDCCHtransmission is addressed to a C-RNTI. In an example, if at least onerandom access response comprises a random access preamble identifier, aUE may consider the random access procedure successfully completed andmay indicate a reception of an acknowledgement for a system informationrequest to upper layers. If a UE has signaled multiple preambletransmissions, the UE may stop transmitting remaining preambles (if any)in response to a successful reception of a corresponding random accessresponse.

In an example, a UE may perform one or more Msg 3 1240 transmissions inresponse to a successful reception of random access response (e.g., fora contention based random access procedure). A UE may adjust an uplinktransmission timing based on a timing advanced command indicated by arandom access response and may transmit one or more transport blocksbased on an uplink grant indicated by a random access response.Subcarrier spacing for PUSCH transmission for Msg3 1240 may be providedby at least one higher layer (e.g. RRC) parameter. A UE may transmit arandom access preamble via PRACH and Msg3 1240 via PUSCH on a same cell.A base station may indicate an UL BWP for a PUSCH transmission of Msg31240 via system information block. A UE may employ HARQ for aretransmission of Msg 3 1240.

In an example, multiple UEs may perform Msg 1 1220 by transmitting asame preamble to a base station and receive, from the base station, asame random access response comprising an identity (e.g., TC-RNTI).Contention resolution 1250 may ensure that a UE does not incorrectly usean identity of another UE. For example, contention resolution 1250 maybe based on C-RNTI on PDCCH or a UE contention resolution identity onDL-SCH. For example, if a base station assigns a C-RNTI to a UE, the UEmay perform contention resolution 1250 based on a reception of a PDCCHtransmission that is addressed to the C-RNTI. In response to detectionof a C-RNTI on a PDCCH, a UE may consider contention resolution 1250successful and may consider a random access procedure successfullycompleted. If a UE has no valid C-RNTI, a contention resolution may beaddressed by employing a TC-RNTI. For example, if a MAC PDU issuccessfully decoded and a MAC PDU comprises a UE contention resolutionidentity MAC CE that matches the CCCH SDU transmitted in Msg3 1250, a UEmay consider the contention resolution 1250 successful and may considerthe random access procedure successfully completed.

FIG. 13 is an example structure for MAC entities as per an aspect of anembodiment. In an example, a wireless device may be configured tooperate in a multi-connectivity mode. A wireless device in RRC_CONNECTEDwith multiple RX/TX may be configured to utilize radio resourcesprovided by multiple schedulers located in a plurality of base stations.The plurality of base stations may be connected via a non-ideal or idealbackhaul over the Xn interface. In an example, a base station in aplurality of base stations may act as a master base station or as asecondary base station. A wireless device may be connected to one masterbase station and one or more secondary base stations. A wireless devicemay be configured with multiple MAC entities, e.g. one MAC entity formaster base station, and one or more other MAC entities for secondarybase station(s). In an example, a configured set of serving cells for awireless device may comprise two subsets: an MCG comprising servingcells of a master base station, and one or more SCGs comprising servingcells of a secondary base station(s). FIG. 13 illustrates an examplestructure for MAC entities when MCG and SCG are configured for awireless device.

In an example, at least one cell in a SCG may have a configured UL CC,wherein a cell of at least one cell may be called PSCell or PCell ofSCG, or sometimes may be simply called PCell. A PSCell may be configuredwith PUCCH resources. In an example, when a SCG is configured, there maybe at least one SCG bearer or one split bearer. In an example, upondetection of a physical layer problem or a random access problem on aPSCell, or upon reaching a number of RLC retransmissions associated withthe SCG, or upon detection of an access problem on a PSCell during a SCGaddition or a SCG change: an RRC connection re-establishment proceduremay not be triggered, UL transmissions towards cells of an SCG may bestopped, a master base station may be informed by a UE of a SCG failuretype and DL data transfer over a master base station may be maintained.

In an example, a MAC sublayer may provide services such as data transferand radio resource allocation to upper layers (e.g. 1310 or 1320). A MACsublayer may comprise a plurality of MAC entities (e.g. 1350 and 1360).A MAC sublayer may provide data transfer services on logical channels.To accommodate different kinds of data transfer services, multiple typesof logical channels may be defined. A logical channel may supporttransfer of a particular type of information. A logical channel type maybe defined by what type of information (e.g., control or data) istransferred. For example, BCCH, PCCH, CCCH and DCCH may be controlchannels and DTCH may be a traffic channel. In an example, a first MACentity (e.g. 1310) may provide services on PCCH, BCCH, CCCH, DCCH, DTCHand MAC control elements. In an example, a second MAC entity (e.g. 1320)may provide services on BCCH, DCCH, DTCH and MAC control elements.

A MAC sublayer may expect from a physical layer (e.g. 1330 or 1340)services such as data transfer services, signaling of HARQ feedback,signaling of scheduling request or measurements (e.g. CQI). In anexample, in dual connectivity, two MAC entities may be configured for awireless device: one for MCG and one for SCG. A MAC entity of wirelessdevice may handle a plurality of transport channels. In an example, afirst MAC entity may handle first transport channels comprising a PCCHof MCG, a first BCH of MCG, one or more first DL-SCHs of MCG, one ormore first UL-SCHs of MCG and one or more first RACHs of MCG. In anexample, a second MAC entity may handle second transport channelscomprising a second BCH of SCG, one or more second DL-SCHs of SCG, oneor more second UL-SCHs of SCG and one or more second RACHs of SCG.

In an example, if a MAC entity is configured with one or more SCells,there may be multiple DL-SCHs and there may be multiple UL-SCHs as wellas multiple RACHs per MAC entity. In an example, there may be one DL-SCHand UL-SCH on a SpCell. In an example, there may be one DL-SCH, zero orone UL-SCH and zero or one RACH for an SCell. A DL-SCH may supportreceptions using different numerologies and/or TTI duration within a MACentity. A UL-SCH may also support transmissions using differentnumerologies and/or TTI duration within the MAC entity.

In an example, a MAC sublayer may support different functions and maycontrol these functions with a control (e.g. 1355 or 1365) element.Functions performed by a MAC entity may comprise mapping between logicalchannels and transport channels (e.g., in uplink or downlink),multiplexing (e.g. 1352 or 1362) of MAC SDUs from one or differentlogical channels onto transport blocks (TB) to be delivered to thephysical layer on transport channels (e.g., in uplink), demultiplexing(e.g. 1352 or 1362) of MAC SDUs to one or different logical channelsfrom transport blocks (TB) delivered from the physical layer ontransport channels (e.g., in downlink), scheduling information reporting(e.g., in uplink), error correction through HARQ in uplink or downlink(e.g. 1363), and logical channel prioritization in uplink (e.g. 1351 or1361). A MAC entity may handle a random access process (e.g. 1354 or1364).

FIG. 14 is an example diagram of a RAN architecture comprising one ormore base stations. In an example, a protocol stack (e.g. RRC, SDAP,PDCP, RLC, MAC, and PHY) may be supported at a node. A base station(e.g. gNB 120A or 120B) may comprise a base station central unit (CU)(e.g. gNB-CU 1420A or 1420B) and at least one base station distributedunit (DU) (e.g. gNB-DU 1430A, 1430B, 1430C, or 1430D) if a functionalsplit is configured. Upper protocol layers of a base station may belocated in a base station CU, and lower layers of the base station maybe located in the base station DUs. An F1 interface (e.g. CU-DUinterface) connecting a base station CU and base station DUs may be anideal or non-ideal backhaul. F1-C may provide a control plane connectionover an F1 interface, and F1-U may provide a user plane connection overthe F1 interface. In an example, an Xn interface may be configuredbetween base station CUs.

In an example, a base station CU may comprise an RRC function, an SDAPlayer, and a PDCP layer, and base station DUs may comprise an RLC layer,a MAC layer, and a PHY layer. In an example, various functional splitoptions between a base station CU and base station DUs may be possibleby locating different combinations of upper protocol layers (RANfunctions) in a base station CU and different combinations of lowerprotocol layers (RAN functions) in base station DUs. A functional splitmay support flexibility to move protocol layers between a base stationCU and base station DUs depending on service requirements and/or networkenvironments.

In an example, functional split options may be configured per basestation, per base station CU, per base station DU, per UE, per bearer,per slice, or with other granularities. In per base station CU split, abase station CU may have a fixed split option, and base station DUs maybe configured to match a split option of a base station CU. In per basestation DU split, a base station DU may be configured with a differentsplit option, and a base station CU may provide different split optionsfor different base station DUs. In per UE split, a base station (basestation CU and at least one base station DUs) may provide differentsplit options for different wireless devices. In per bearer split,different split options may be utilized for different bearers. In perslice splice, different split options may be applied for differentslices.

FIG. 15 is an example diagram showing RRC state transitions of awireless device. In an example, a wireless device may be in at least oneRRC state among an RRC connected state (e.g. RRC_Connected 1530,RRC_Connected), an RRC idle state (e.g. RRC Idle 1510, RRC_Idle), and/oran RRC inactive state (e.g. RRC Inactive 1520, RRC_Inactive). In anexample, in an RRC connected state, a wireless device may have at leastone RRC connection with at least one base station (e.g. gNB and/or eNB),which may have a UE context of the wireless device. A UE context (e.g. awireless device context) may comprise at least one of an access stratumcontext, one or more radio link configuration parameters, bearer (e.g.data radio bearer (DRB), signaling radio bearer (SRB), logical channel,QoS flow, PDU session, and/or the like) configuration information,security information, PHY/MAC/RLC/PDCP/SDAP layer configurationinformation, and/or the like configuration information for a wirelessdevice. In an example, in an RRC idle state, a wireless device may nothave an RRC connection with a base station, and a UE context of awireless device may not be stored in a base station. In an example, inan RRC inactive state, a wireless device may not have an RRC connectionwith a base station. A UE context of a wireless device may be stored ina base station, which may be called as an anchor base station (e.g. lastserving base station).

In an example, a wireless device may transition a UE RRC state betweenan RRC idle state and an RRC connected state in both ways (e.g.connection release 1540 or connection establishment 1550; or connectionreestablishment) and/or between an RRC inactive state and an RRCconnected state in both ways (e.g. connection inactivation 1570 orconnection resume 1580). In an example, a wireless device may transitionits RRC state from an RRC inactive state to an RRC idle state (e.g.connection release 1560).

In an example, an anchor base station may be a base station that maykeep a UE context (a wireless device context) of a wireless device atleast during a time period that a wireless device stays in a RANnotification area (RNA) of an anchor base station, and/or that awireless device stays in an RRC inactive state. In an example, an anchorbase station may be a base station that a wireless device in an RRCinactive state was lastly connected to in a latest RRC connected stateor that a wireless device lastly performed an RNA update procedure in.In an example, an RNA may comprise one or more cells operated by one ormore base stations. In an example, a base station may belong to one ormore RNAs. In an example, a cell may belong to one or more RNAs.

In an example, a wireless device may transition a UE RRC state from anRRC connected state to an RRC inactive state in a base station. Awireless device may receive RNA information from the base station. RNAinformation may comprise at least one of an RNA identifier, one or morecell identifiers of one or more cells of an RNA, a base stationidentifier, an IP address of the base station, an AS context identifierof the wireless device, a resume identifier, and/or the like.

In an example, an anchor base station may broadcast a message (e.g. RANpaging message) to base stations of an RNA to reach to a wireless devicein an RRC inactive state, and/or the base stations receiving the messagefrom the anchor base station may broadcast and/or multicast anothermessage (e.g. paging message) to wireless devices in their coveragearea, cell coverage area, and/or beam coverage area associated with theRNA through an air interface.

In an example, when a wireless device in an RRC inactive state movesinto a new RNA, the wireless device may perform an RNA update (RNAU)procedure, which may comprise a random access procedure by the wirelessdevice and/or a UE context retrieve procedure. A UE context retrieve maycomprise: receiving, by a base station from a wireless device, a randomaccess preamble; and fetching, by a base station, a UE context of thewireless device from an old anchor base station. Fetching may comprise:sending a retrieve UE context request message comprising a resumeidentifier to the old anchor base station and receiving a retrieve UEcontext response message comprising the UE context of the wirelessdevice from the old anchor base station.

In an example embodiment, a wireless device in an RRC inactive state mayselect a cell to camp on based on at least a on measurement results forone or more cells, a cell where a wireless device may monitor an RNApaging message and/or a core network paging message from a base station.In an example, a wireless device in an RRC inactive state may select acell to perform a random access procedure to resume an RRC connectionand/or to transmit one or more packets to a base station (e.g. to anetwork). In an example, if a cell selected belongs to a different RNAfrom an RNA for a wireless device in an RRC inactive state, the wirelessdevice may initiate a random access procedure to perform an RNA updateprocedure. In an example, if a wireless device in an RRC inactive statehas one or more packets, in a buffer, to transmit to a network, thewireless device may initiate a random access procedure to transmit oneor more packets to a base station of a cell that the wireless deviceselects. A random access procedure may be performed with two messages(e.g. 2 stage random access) and/or four messages (e.g. 4 stage randomaccess) between the wireless device and the base station.

In an example embodiment, a base station receiving one or more uplinkpackets from a wireless device in an RRC inactive state may fetch a UEcontext of a wireless device by transmitting a retrieve UE contextrequest message for the wireless device to an anchor base station of thewireless device based on at least one of an AS context identifier, anRNA identifier, a base station identifier, a resume identifier, and/or acell identifier received from the wireless device. In response tofetching a UE context, a base station may transmit a path switch requestfor a wireless device to a core network entity (e.g. AMF, MME, and/orthe like). A core network entity may update a downlink tunnel endpointidentifier for one or more bearers established for the wireless devicebetween a user plane core network entity (e.g. UPF, S-GW, and/or thelike) and a RAN node (e.g. the base station), e.g. changing a downlinktunnel endpoint identifier from an address of the anchor base station toan address of the base station.

A gNB may communicate with a wireless device via a wireless networkemploying one or more new radio technologies. The one or more radiotechnologies may comprise at least one of: multiple technologies relatedto physical layer; multiple technologies related to medium accesscontrol layer; and/or multiple technologies related to radio resourcecontrol layer. Example embodiments of enhancing the one or more radiotechnologies may improve performance of a wireless network. Exampleembodiments may increase the system throughput, or data rate oftransmission. Example embodiments may reduce battery consumption of awireless device. Example embodiments may improve latency of datatransmission between a gNB and a wireless device. Example embodimentsmay improve network coverage of a wireless network. Example embodimentsmay improve transmission efficiency of a wireless network.

A gNB may transmit one or more MAC PDUs to a wireless device. In anexample, a MAC PDU may be a bit string that is byte aligned (e.g., amultiple of eight bits) in length. In an example, bit strings may berepresented by tables in which the most significant bit is the leftmostbit of the first line of the table, and the least significant bit is therightmost bit on the last line of the table. More generally, the bitstring may be read from left to right and then in the reading order ofthe lines. In an example, the bit order of a parameter field within aMAC PDU is represented with the first and most significant bit in theleftmost bit and the last and least significant bit in the rightmostbit.

In an example, a MAC SDU may be a bit string that is byte aligned (e.g.,a multiple of eight bits) in length. In an example, a MAC SDU may beincluded in a MAC PDU from the first bit onward.

In an example, a MAC CE may be a bit string that is byte aligned (e.g.,a multiple of eight bits) in length.

In an example, a MAC subheader may be a bit string that is byte aligned(e.g., a multiple of eight bits) in length. In an example, a MACsubheader may be placed immediately in front of a corresponding MAC SDU,MAC CE, or padding.

In an example, a MAC entity may ignore a value of reserved bits in a DLMAC PDU.

In an example, a MAC PDU may comprise one or more MAC subPDUs. A MACsubPDU of the one or more MAC subPDUs may comprise: a MAC subheader only(including padding); a MAC subheader and a MAC SDU; a MAC subheader anda MAC CE; and/or a MAC subheader and padding. In an example, the MAC SDUmay be of variable size. In an example, a MAC subheader may correspondto a MAC SDU, a MAC CE, or padding.

In an example, when a MAC subheader corresponds to a MAC SDU, avariable-sized MAC CE, or padding, the MAC subheader may comprise: an Rfield with a one bit length; an F field with a one bit length; an LCIDfield with a multi-bit length; and/or an L field with a multi-bitlength.

FIG. 16A shows an example of a MAC subheader with an R field, an Ffield, an LCID field, and an L field. In the example MAC subheader ofFIG. 16A, the LCID field may be six bits in length, and the L field maybe eight bits in length. FIG. 16B shows example of a MAC subheader withan R field, a F field, an LCID field, and an L field. In the example MACsubheader of FIG. 16B, the LCID field may be six bits in length, and theL field may be sixteen bits in length.

In an example, when a MAC subheader corresponds to a fixed sized MAC CEor padding, the MAC subheader may comprise: an R field with a two bitlength and an LCID field with a multi-bit length. FIG. 16C shows anexample of a MAC subheader with an R field and an LCID field. In theexample MAC subheader of FIG. 16C, the LCID field may be six bits inlength, and the R field may be two bits in length.

FIG. 17A shows an example of a DL MAC PDU. In the example of FIG. 17A,multiple MAC CEs, such as MAC CE 1 and 2, may be placed together. A MACsubPDU comprising a MAC CE may be placed before any MAC subPDUcomprising a MAC SDU or a MAC subPDU comprising padding.

FIG. 17B shows an example of a UL MAC PDU. In the example of FIG. 17B,multiple MAC CEs, such as MAC CE 1 and 2, may be placed together. A MACsubPDU comprising a MAC CE may be placed after all MAC subPDUscomprising a MAC SDU. In addition, the MAC subPDU may be placed before aMAC subPDU comprising padding.

In an example, a MAC entity of a gNB may transmit one or more MAC CEs toa MAC entity of a wireless device. FIG. 18 shows an example of multipleLCIDs that may be associated with the one or more MAC CEs. In theexample of FIG. 18, the one or more MAC CEs comprise at least one of: aSP ZP CSI-RS Resource Set Activation/Deactivation MAC CE; a PUCCHspatial relation Activation/Deactivation MAC CE; a SP SRSActivation/Deactivation MAC CE; a SP CSI reporting on PUCCHActivation/Deactivation MAC CE; a TCI State Indication for UE-specificPDCCH MAC CE; a TCI State Indication for UE-specific PDSCH MAC CE; anAperiodic CSI Trigger State Subselection MAC CE; a SP CSI-RS/CSI-IMResource Set Activation/Deactivation MAC CE; a UE contention resolutionidentity MAC CE; a timing advance command MAC CE; a DRX command MAC CE;a Long DRX command MAC CE; an SCell activation/deactivation MAC CE (1Octet); an SCell activation/deactivation MAC CE (4 Octet); and/or aduplication activation/deactivation MAC CE. In an example, a MAC CE,such as a MAC CE transmitted by a MAC entity of a gNB to a MAC entity ofa wireless device, may have an LCID in the MAC subheader correspondingto the MAC CE. Different MAC CE may have different LCID in the MACsubheader corresponding to the MAC CE. For example, an LCID given by111011 in a MAC subheader may indicate that a MAC CE associated with theMAC subheader is a long DRX command MAC CE.

In an example, the MAC entity of the wireless device may transmit to theMAC entity of the gNB one or more MAC CEs. FIG. 19 shows an example ofthe one or more MAC CEs. The one or more MAC CEs may comprise at leastone of: a short buffer status report (BSR) MAC CE; a long BSR MAC CE; aC-RNTI MAC CE; a configured grant confirmation MAC CE; a single entryPHR MAC CE; a multiple entry PHR MAC CE; a short truncated BSR; and/or along truncated BSR. In an example, a MAC CE may have an LCID in the MACsubheader corresponding to the MAC CE. Different MAC CE may havedifferent LCID in the MAC subheader corresponding to the MAC CE. Forexample, an LCID given by 111011 in a MAC subheader may indicate that aMAC CE associated with the MAC subheader is a short-truncated commandMAC CE.

In carrier aggregation (CA), two or more component carriers (CCs) may beaggregated. A wireless device may simultaneously receive or transmit onone or more CCs, depending on capabilities of the wireless device, usingthe technique of CA. In an example, a wireless device may support CA forcontiguous CCs and/or for non-contiguous CCs. CCs may be organized intocells. For example, CCs may be organized into one primary cell (PCell)and one or more secondary cells (SCells).

When configured with CA, a wireless device may have one RRC connectionwith a network. During an RRC connectionestablishment/re-establishment/handover, a cell providing NAS mobilityinformation may be a serving cell. During an RRC connectionre-establishment/handover procedure, a cell providing a security inputmay be a serving cell. In an example, the serving cell may denote aPCell. In an example, a gNB may transmit, to a wireless device, one ormore messages comprising configuration parameters of a plurality of oneor more SCells, depending on capabilities of the wireless device.

When configured with CA, a base station and/or a wireless device mayemploy an activation/deactivation mechanism of an SCell to improvebattery or power consumption of the wireless device. When a wirelessdevice is configured with one or more SCells, a gNB may activate ordeactivate at least one of the one or more SCells. Upon configuration ofan SCell, the SCell may be deactivated unless an SCell state associatedwith the SCell is set to “activated” or “dormant”.

In an example, a wireless device may activate/deactivate an SCell inresponse to receiving an SCell Activation/Deactivation MAC CE.

In an example, a gNB may transmit, to a wireless device, one or moremessages comprising an SCell timer (e.g., sCellDeactivationTimer). In anexample, a wireless device may deactivate an SCell in response to anexpiry of the SCell timer.

When a wireless device receives an SCell Activation/Deactivation MAC CEactivating an SCell, the wireless device may activate the SCell. Inresponse to the activating the SCell, the wireless device may performoperations comprising: SRS transmissions on the SCell; CQI/PMI/RI/CRIreporting for the SCell; PDCCH monitoring on the SCell; PDCCH monitoringfor the SCell; and/or PUCCH transmissions on the SCell.

In an example, in response to the activating the SCell, the wirelessdevice may start or restart a first SCell timer (e.g.,sCellDeactivationTimer) associated with the SCell. The wireless devicemay start or restart the first SCell timer in the slot when the SCellActivation/Deactivation MAC CE activating the SCell has been received.In an example, in response to the activating the SCell, the wirelessdevice may (re-)initialize one or more suspended configured uplinkgrants of a configured grant Type 1 associated with the SCell accordingto a stored configuration. In an example, in response to the activatingthe SCell, the wireless device may trigger PHR.

When a wireless device receives an SCell Activation/Deactivation MAC CEdeactivating an activated SCell, the wireless device may deactivate theactivated SCell. In an example, when a first SCell timer (e.g.,sCellDeactivationTimer) associated with an activated SCell expires, thewireless device may deactivate the activated SCell. In response to thedeactivating the activated SCell, the wireless device may stop the firstSCell timer associated with the activated SCell. In an example, inresponse to the deactivating the activated SCell, the wireless devicemay clear one or more configured downlink assignments and/or one or moreconfigured uplink grants of a configured uplink grant Type 2 associatedwith the activated SCell. In an example, in response to the deactivatingthe activated SCell, the wireless device may: suspend one or moreconfigured uplink grants of a configured uplink grant Type 1 associatedwith the activated SCell; and/or flush HARQ buffers associated with theactivated SCell.

In an example, when an SCell is deactivated, a wireless device may notperform operations comprising: transmitting SRS on the SCell; reportingCQI/PMI/RI/CRI for the SCell; transmitting on UL-SCH on the SCell;transmitting on RACH on the SCell; monitoring at least one first PDCCHon the SCell; monitoring at least one second PDCCH for the SCell; and/ortransmitting a PUCCH on the SCell.

In an example, when at least one first PDCCH on an activated SCellindicates an uplink grant or a downlink assignment, a wireless devicemay restart a first SCell timer (e.g., sCellDeactivationTimer)associated with the activated SCell. In an example, when at least onesecond PDCCH on a serving cell (e.g. a PCell or an SCell configured withPUCCH, i.e. PUCCH SCell) scheduling the activated SCell indicates anuplink grant or a downlink assignment for the activated SCell, awireless device may restart the first SCell timer (e.g.,sCellDeactivationTimer) associated with the activated SCell.

In an example, when an SCell is deactivated, if there is an ongoingrandom access procedure on the SCell, a wireless device may abort theongoing random access procedure on the SCell.

FIG. 20A shows an example of an SCell Activation/Deactivation MAC CE ofone octet. A first MAC PDU subheader with a first LCID (e.g., ‘111010’as shown in FIG. 18) may identify the SCell Activation/Deactivation MACCE of one octet. The SCell Activation/Deactivation MAC CE of one octetmay have a fixed size. The SCell Activation/Deactivation MAC CE of oneoctet may comprise a single octet. The single octet may comprise a firstnumber of C-fields (e.g. seven) and a second number of R-fields (e.g.,one).

FIG. 20B shows an example of an SCell Activation/Deactivation MAC CE offour octets. A second MAC PDU subheader with a second LCID (e.g.,‘111001’ as shown in FIG. 18) may identify the SCellActivation/Deactivation MAC CE of four octets. The SCellActivation/Deactivation MAC CE of four octets may have a fixed size. TheSCell Activation/Deactivation MAC CE of four octets may comprise fouroctets. The four octets may comprise a third number of C-fields (e.g.,31) and a fourth number of R-fields (e.g., 1).

In FIG. 20A and/or FIG. 20B, a C_(i) field may indicate anactivation/deactivation status of an SCell with an SCell index i if anSCell with SCell index i is configured. In an example, when the C_(i)field is set to one, an SCell with an SCell index i may be activated. Inan example, when the C_(i) field is set to zero, an SCell with an SCellindex i may be deactivated. In an example, if there is no SCellconfigured with SCell index i, the wireless device may ignore the C_(i)field. In FIG. 20A and FIG. 20B, an R field may indicate a reserved bit.The R field may be set to zero.

When configured with CA, a base station and/or a wireless device mayemploy a hibernation mechanism for an SCell to improve battery or powerconsumption of the wireless device and/or to improve latency of SCellactivation/addition. When the wireless device hibernates the SCell, theSCell may be transitioned into a dormant state. In response to the SCellbeing transitioned into a dormant state, the wireless device may: stoptransmitting SRS on the SCell; report CQI/PMI/RI/PTI/CRI for the SCellaccording to a periodicity configured for the SCell in a dormant state;not transmit on UL-SCH on the SCell; not transmit on RACH on the SCell;not monitor the PDCCH on the SCell; not monitor the PDCCH for the SCell;and/or not transmit PUCCH on the SCell. In an example, reporting CSI foran SCell and not monitoring the PDCCH on/for the SCell, when the SCellis in a dormant state, may provide the base station an always-updatedCSI for the SCell. With the always-updated CSI, the base station mayemploy a quick and/or accurate channel adaptive scheduling on the SCellonce the SCell is transitioned back into active state, thereby speedingup the activation procedure of the SCell. In an example, reporting CSIfor the SCell and not monitoring the PDCCH on/for the SCell, when theSCell is in dormant state, may improve battery or power consumption ofthe wireless device, while still providing the base station timelyand/or accurate channel information feedback. In an example, aPCell/PSCell and/or a PUCCH secondary cell may not be configured ortransitioned into dormant state.

When configured with one or more SCells, a gNB may activate, hibernate,or deactivate at least one of the one or more SCells. In an example, agNB may transmit one or more RRC messages comprising parametersindicating at least one SCell being set to an active state, a dormantstate, or an inactive state, to a wireless device.

In an example, when an SCell is in an active state, the wireless devicemay perform: SRS transmissions on the SCell; CQI/PMI/RI/CRI reportingfor the SCell; PDCCH monitoring on the SCell; PDCCH monitoring for theSCell; and/or PUCCH/SPUCCH transmissions on the SCell.

In an example, when an SCell is in an inactive state, the wirelessdevice may: not transmit SRS on the SCell; not report CQI/PMI/RI/CRI forthe SCell; not transmit on UL-SCH on the SCell; not transmit on RACH onthe SCell; not monitor PDCCH on the SCell; not monitor PDCCH for theSCell; and/or not transmit PUCCH/SPUCCH on the SCell.

In an example, when an SCell is in a dormant state, the wireless devicemay: not transmit SRS on the SCell; report CQI/PMI/RI/CRI for the SCell;not transmit on UL-SCH on the SCell; not transmit on RACH on the SCell;not monitor PDCCH on the SCell; not monitor PDCCH for the SCell; and/ornot transmit PUCCH/SPUCCH on the SCell.

When configured with one or more SCells, a gNB may activate, hibernate,or deactivate at least one of the one or more SCells. In an example, agNB may transmit one or more MAC control elements comprising parametersindicating activation, deactivation, or hibernation of at least oneSCell to a wireless device.

In an example, a gNB may transmit a first MAC CE (e.g.,activation/deactivation MAC CE, as shown in FIG. 20A or FIG. 20B)indicating activation or deactivation of at least one SCell to awireless device. In FIG. 20A and/or FIG. 20B, a C_(i) field may indicatean activation/deactivation status of an SCell with an SCell index i ifan SCell with SCell index i is configured. In an example, when the C_(i)field is set to one, an SCell with an SCell index i may be activated. Inan example, when the C_(i) field is set to zero, an SCell with an SCellindex i may be deactivated. In an example, if there is no SCellconfigured with SCell index i, the wireless device may ignore the C_(i)field. In FIG. 20A and FIG. 20B, an R field may indicate a reserved bit.In an example, the R field may be set to zero.

In an example, a gNB may transmit a second MAC CE (e.g., hibernation MACCE) indicating activation or hibernation of at least one SCell to awireless device. In an example, the second MAC CE may be associated witha second LCID different from a first LCID of the first MAC CE (e.g.,activation/deactivation MAC CE). In an example, the second MAC CE mayhave a fixed size. In an example, the second MAC CE may consist of asingle octet containing seven C-fields and one R-field. FIG. 21A showsan example of the second MAC CE with a single octet. In another example,the second MAC CE may consist of four octets containing 31 C-fields andone R-field. FIG. 21B shows an example of the second MAC CE with fouroctets. In an example, the second MAC CE with four octets may beassociated with a third LCID different from the second LCID for thesecond MAC CE with a single octet, and/or the first LCID foractivation/deactivation MAC CE. In an example, when there is no SCellwith a serving cell index greater than 7, the second MAC CE of one octetmay be applied, otherwise the second MAC CE of four octets may beapplied.

In an example, when the second MAC CE is received, and the first MAC CEis not received, C_(i) may indicate a dormant/activated status of anSCell with SCell index i if there is an SCell configured with SCellindex i, otherwise the MAC entity may ignore the C_(i) field. In anexample, when C_(i) is set to “1”, the wireless device may transition anSCell associated with SCell index i into a dormant state. In an example,when C_(i) is set to “0”, the wireless device may activate an SCellassociated with SCell index i. In an example, when C_(i) is set to “0”and the SCell with SCell index i is in a dormant state, the wirelessdevice may activate the SCell with SCell index i. In an example, whenC_(i) is set to “0” and the SCell with SCell index i is not in a dormantstate, the wireless device may ignore the C_(i) field.

In an example, when both the first MAC CE (activation/deactivation MACCE) and the second MAC CE (hibernation MAC CE) are received, two C_(i)fields of the two MAC CEs may indicate possible state transitions of theSCell with SCell index i if there is an SCell configured with SCellindex i, otherwise the MAC entity may ignore the C_(i) fields. In anexample, the C_(i) fields of the two MAC CEs may be interpretedaccording to FIG. 21C.

When configured with one or more SCells, a gNB may activate, hibernate,or deactivate at least one of the one or more SCells. In an example, aMAC entity of a gNB and/or a wireless device may maintain an SCelldeactivation timer (e.g., sCellDeactivationTimer) per configured SCell(except the SCell configured with PUCCH/SPUCCH, if any) and deactivatethe associated SCell upon its expiry.

In an example, a MAC entity of a gNB and/or a wireless device maymaintain an SCell hibernation timer (e.g., sCellHibernationTimer) perconfigured SCell (except the SCell configured with PUCCH/SPUCCH, if any)and hibernate the associated SCell upon the SCell hibernation timerexpiry if the SCell is in active state. In an example, when both theSCell deactivation timer and the SCell hibernation timer are configured,the SCell hibernation timer may take priority over the SCelldeactivation timer. In an example, when both the SCell deactivationtimer and the SCell hibernation timer are configured, a gNB and/or awireless device may ignore the SCell deactivation timer regardless ofthe SCell deactivation timer expiry.

In an example, a MAC entity of a gNB and/or a wireless device maymaintain a dormant SCell deactivation timer (e.g.,dormantSCellDeactivationTimer) per configured SCell (except the SCellconfigured with PUCCH/SPUCCH, if any), and deactivate the associatedSCell upon the dormant SCell deactivation timer expiry if the SCell isin dormant state.

In an example, when a MAC entity of a wireless device is configured withan activated SCell upon SCell configuration, the MAC entity may activatethe SCell. In an example, when a MAC entity of a wireless devicereceives a MAC CE(s) activating an SCell, the MAC entity may activatethe SCell. In an example, the MAC entity may start or restart the SCelldeactivation timer associated with the SCell in response to activatingthe SCell. In an example, the MAC entity may start or restart the SCellhibernation timer (if configured) associated with the SCell in responseto activating the SCell. In an example, the MAC entity may trigger PHRprocedure in response to activating the SCell.

In an example, when a MAC entity of a wireless device receives a MACCE(s) indicating deactivating an SCell, the MAC entity may deactivatethe SCell. In an example, in response to receiving the MAC CE(s), theMAC entity may: deactivate the SCell; stop an SCell deactivation timerassociated with the SCell; and/or flush all HARQ buffers associated withthe SCell.

In an example, when an SCell deactivation timer associated with anactivated SCell expires and an SCell hibernation timer is notconfigured, the MAC entity may: deactivate the SCell; stop the SCelldeactivation timer associated with the SCell; and/or flush all HARQbuffers associated with the SCell.

In an example, when a first PDCCH on an activated SCell indicates anuplink grant or downlink assignment, or a second PDCCH on a serving cellscheduling an activated SCell indicates an uplink grant or a downlinkassignment for the activated SCell, or a MAC PDU is transmitted in aconfigured uplink grant or received in a configured downlink assignment,the MAC entity may: restart the SCell deactivation timer associated withthe SCell; and/or restart the SCell hibernation timer associated withthe SCell if configured. In an example, when an SCell is deactivated, anongoing random access procedure on the SCell may be aborted.

In an example, when a MAC entity is configured with an SCell associatedwith an SCell state set to dormant state upon the SCell configuration,or when the MAC entity receives MAC CE(s) indicating transitioning theSCell into a dormant state, the MAC entity may: transition the SCellinto a dormant state; transmit one or more CSI reports for the SCell;stop an SCell deactivation timer associated with the SCell; stop anSCell hibernation timer associated with the SCell if configured; startor restart a dormant SCell deactivation timer associated with the SCell;and/or flush all HARQ buffers associated with the SCell. In an example,when the SCell hibernation timer associated with the activated SCellexpires, the MAC entity may: hibernate the SCell; stop the SCelldeactivation timer associated with the SCell; stop the SCell hibernationtimer associated with the SCell; and/or flush all HARQ buffersassociated with the SCell. In an example, when a dormant SCelldeactivation timer associated with a dormant SCell expires, the MACentity may: deactivate the SCell; and/or stop the dormant SCelldeactivation timer associated with the SCell. In an example, when anSCell is in dormant state, ongoing random access procedure on the SCellmay be aborted.

FIG. 22 shows DCI formats for an example of 20 MHz FDD operation with 2Tx antennas at the base station and no carrier aggregation in an LTEsystem. In a NR system, the DCI formats may comprise at least one of:DCI format 0_0/0_1 indicating scheduling of PUSCH in a cell; DCI format1_0/1_1 indicating scheduling of PDSCH in a cell; DCI format 2_0notifying a group of UEs of slot format; DCI format 2_1 notifying agroup of UEs of PRB(s) and OFDM symbol(s) where a UE may assume notransmission is intended for the UE; DCI format 2_2 indicatingtransmission of TPC commands for PUCCH and PUSCH; and/or DCI format 2_3indicating transmission of a group of TPC commands for SRS transmissionby one or more UEs. In an example, a gNB may transmit a DCI via a PDCCHfor scheduling decision and power-control commends. More specifically,the DCI may comprise at least one of: downlink scheduling assignments,uplink scheduling grants, power-control commands. The downlinkscheduling assignments may comprise at least one of: PDSCH resourceindication, transport format, HARQ information, and control informationrelated to multiple antenna schemes, a command for power control of thePUCCH used for transmission of ACK/NACK in response to downlinkscheduling assignments. The uplink scheduling grants may comprise atleast one of: PUSCH resource indication, transport format, and HARQrelated information, a power control command of the PUSCH.

In an example, the different types of control information correspond todifferent DCI message sizes. For example, supporting spatialmultiplexing with noncontiguous allocation of RBs in the frequencydomain may require a larger scheduling message in comparison with anuplink grant allowing for frequency-contiguous allocation only. The DCImay be categorized into different DCI formats, where a formatcorresponds to a certain message size and usage.

In an example, a UE may monitor one or more PDCCH candidates to detectone or more DCI with one or more DCI format. The one or more PDCCH maybe transmitted in common search space or UE-specific search space. A UEmay monitor PDCCH with only a limited set of DCI format, to save powerconsumption. For example, a normal UE may not be required to detect aDCI with DCI format 6 which is used for an eMTC UE. The more DCI formatto be detected, the more power be consumed at the UE.

In an example, the one or more PDCCH candidates that a UE monitors maybe defined in terms of PDCCH UE-specific search spaces. A PDCCHUE-specific search space at CCE aggregation level L∈{1, 2, 4, 8} may bedefined by a set of PDCCH candidates for CCE aggregation level L. In anexample, for a DCI format, a UE may be configured per serving cell byone or more higher layer parameters a number of PDCCH candidates per CCEaggregation level L.

In an example, in non-DRX mode operation, a UE may monitor one or morePDCCH candidate in control resource set q according to a periodicity ofW_(PDCCH, q) symbols that may be configured by one or more higher layerparameters for control resource set q.

In an example, the information in the DCI formats used for downlinkscheduling may be organized into different groups, with the fieldpresent varying between the DCI formats, including at least one of:resource information, consisting of: carrier indicator (0 or 3 bits), RBallocation; HARQ process number; MCS, NDI, and RV (for the first TB);MCS, NDI and RV (for the second TB); MIMO related information; PDSCHresource-element mapping and QCI; Downlink assignment index (DAI); TPCfor PUCCH; SRS request (1 bit), triggering one-shot SRS transmission;ACK/NACK offset; DCI format 0/1A indication, used to differentiatebetween DCI format 1A and 0; and padding if necessary. The MIMO relatedinformation may comprise at least one of: PMI, precoding information,transport block swap flag, power offset between PDSCH and referencesignal, reference-signal scrambling sequence, number of layers, and/orantenna ports for the transmission.

In an example, the information in the DCI formats used for uplinkscheduling may be organized into different groups, with the fieldpresent varying between the DCI formats, including at least one of:resource information, consisting of: carrier indicator, resourceallocation type, RB allocation; MCS, NDI (for the first TB); MCS, NDI(for the second TB); phase rotation of the uplink DMRS; precodinginformation; CSI request, requesting an aperiodic CSI report; SRSrequest (2 bit), used to trigger aperiodic SRS transmission using one ofup to three preconfigured settings; uplink index/DAI; TPC for PUSCH; DCIformat 0/1A indication; and padding if necessary.

In an example, a gNB may perform cyclic redundancy check (CRC)scrambling for a DCI, before transmitting the DCI via a PDCCH. The gNBmay perform CRC scrambling by bit-wise addition (or Modulo-2 addition orexclusive OR (XOR) operation) of multiple bits of at least one wirelessdevice identifier (e.g., C-RNTI, CS-RNTI, TPC-CS-RNTI, TPC-PUCCH-RNTI,TPC-PUSCH-RNTI, SP CSI C-RNTI, SRS-TPC-RNTI, INT-RNTI, SFI-RNTI, P-RNTI,SI-RNTI, RA-RNTI, and/or MCS-C-RNTI) with the CRC bits of the DCI. Thewireless device may check the CRC bits of the DCI, when detecting theDCI. The wireless device may receive the DCI when the CRC is scrambledby a sequence of bits that is the same as the at least one wirelessdevice identifier.

In a NR system, in order to support wide bandwidth operation, a gNB maytransmit one or more PDCCH in different control resource sets. A gNB maytransmit one or more RRC message comprising configuration parameters ofone or more control resource sets. At least one of the one or morecontrol resource sets may comprise at least one of: a first OFDM symbol;a number of consecutive OFDM symbols; a set of resource blocks; aCCE-to-REG mapping; and a REG bundle size, in case of interleavedCCE-to-REG mapping.

A base station (gNB) may configure a wireless device (UE) with uplink(UL) bandwidth parts (BWPs) and downlink (DL) BWPs to enable bandwidthadaptation (BA) on a PCell. If carrier aggregation is configured, thegNB may further configure the UE with at least DL BWP(s) (i.e., theremay be no UL BWPs in the UL) to enable BA on an SCell. For the PCell, aninitial active BWP may be a first BWP used for initial access. For theSCell, a first active BWP may be a second BWP configured for the UE tooperate on the SCell upon the SCell being activated.

In paired spectrum (e.g. FDD), a gNB and/or a UE may independentlyswitch a DL BWP and an UL BWP. In unpaired spectrum (e.g. TDD), a gNBand/or a UE may simultaneously switch a DL BWP and an UL BWP.

In an example, a gNB and/or a UE may switch a BWP between configuredBWPs by means of a DCI or a BWP inactivity timer. When the BWPinactivity timer is configured for a serving cell, the gNB and/or the UEmay switch an active BWP to a default BWP in response to an expiry ofthe BWP inactivity timer associated with the serving cell. The defaultBWP may be configured by the network.

In an example, for FDD systems, when configured with BA, one UL BWP foreach uplink carrier and one DL BWP may be active at a time in an activeserving cell. In an example, for TDD systems, one DL/UL BWP pair may beactive at a time in an active serving cell. Operating on the one UL BWPand the one DL BWP (or the one DL/UL pair) may improve UE batteryconsumption. BWPs other than the one active UL BWP and the one active DLBWP that the UE may work on may be deactivated. On deactivated BWPs, theUE may: not monitor PDCCH; and/or not transmit on PUCCH, PRACH, andUL-SCH.

In an example, a serving cell may be configured with at most a firstnumber (e.g., four) of BWPs. In an example, for an activated servingcell, there may be one active BWP at any point in time.

In an example, a BWP switching for a serving cell may be used toactivate an inactive BWP and deactivate an active BWP at a time. In anexample, the BWP switching may be controlled by a PDCCH indicating adownlink assignment or an uplink grant. In an example, the BWP switchingmay be controlled by a BWP inactivity timer (e.g., bwp-InactivityTimer).In an example, the BWP switching may be controlled by a MAC entity inresponse to initiating a Random Access procedure. Upon addition of anSpCell or activation of an SCell, one BWP may be initially activewithout receiving a PDCCH indicating a downlink assignment or an uplinkgrant. The active BWP for a serving cell may be indicated by RRC and/orPDCCH. In an example, for unpaired spectrum, a DL BWP may be paired witha UL BWP, and BWP switching may be common for both UL and DL.

FIG. 23 shows an example of BWP switching on an SCell. In an example, aUE may receive RRC message comprising parameters of a SCell and one ormore BWP configuration associated with the SCell. The RRC message maycomprise: RRC connection reconfiguration message (e.g.,RRCReconfiguration); RRC connection reestablishment message (e.g.,RRCRestablishment); and/or RRC connection setup message (e.g.,RRCSetup). Among the one or more BWPs, at least one BWP may beconfigured as the first active BWP (e.g., BWP 1 in FIG. 23), one BWP asthe default BWP (e.g., BWP 0 in FIG. 23). The UE may receive a MAC CE toactivate the SCell at n^(th) slot. The UE may start a SCell deactivationtimer (e.g., sCellDeactivationTimer), and start CSI related actions forthe SCell, and/or start CSI related actions for the first active BWP ofthe SCell. The UE may start monitoring a PDCCH on BWP 1 in response toactivating the SCell.

In an example, the UE may start restart a BWP inactivity timer (e.g.,bwp-InactivityTimer) at m^(th) slot in response to receiving a DCIindicating DL assignment on BWP 1. The UE may switch back to the defaultBWP (e.g., BWP 0) as an active BWP when the BWP inactivity timerexpires, at s^(th) slot. The UE may deactivate the SCell and/or stop theBWP inactivity timer when the sCellDeactivationTimer expires.

Employing the BWP inactivity timer may further reduce UE's powerconsumption when the UE is configured with multiple cells with each cellhaving wide bandwidth (e.g., 1 GHz). The UE may only transmit on orreceive from a narrow-bandwidth BWP (e.g., 5 MHz) on the PCell or SCellwhen there is no activity on an active BWP.

In an example, a MAC entity may apply normal operations on an active BWPfor an activated serving cell configured with a BWP comprising:transmitting on UL-SCH; transmitting on RACH; monitoring a PDCCH;transmitting PUCCH; receiving DL-SCH; and/or (re-) initializing anysuspended configured uplink grants of configured grant Type 1 accordingto a stored configuration, if any.

In an example, on an inactive BWP for each activated serving cellconfigured with a BWP, a MAC entity may: not transmit on UL-SCH; nottransmit on RACH; not monitor a PDCCH; not transmit PUCCH; not transmitSRS, not receive DL-SCH; clear any configured downlink assignment andconfigured uplink grant of configured grant Type 2; and/or suspend anyconfigured uplink grant of configured Type 1.

In an example, if a MAC entity receives a PDCCH for a BWP switching of aserving cell while a Random Access procedure associated with thisserving cell is not ongoing, a UE may perform the BWP switching to a BWPindicated by the PDCCH.

In an example, if a bandwidth part indicator field is configured in DCIformat 1_1, the bandwidth part indicator field value may indicate theactive DL BWP, from the configured DL BWP set, for DL receptions. In anexample, if a bandwidth part indicator field is configured in DCI format0_1, the bandwidth part indicator field value may indicate the active ULBWP, from the configured UL BWP set, for UL transmissions.

In an example, for a primary cell, a UE may be provided by a higherlayer parameter Default-DL-BWP a default DL BWP among the configured DLBWPs. If a UE is not provided a default DL BWP by the higher layerparameter Default-DL-BWP, the default DL BWP is the initial active DLBWP.

In an example, a UE may be provided by higher layer parameterbwp-InactivityTimer, a timer value for the primary cell. If configured,the UE may increment the timer, if running, every interval of 1millisecond for frequency range 1 or every 0.5 milliseconds forfrequency range 2 if the UE may not detect a DCI format 1_1 for pairedspectrum operation or if the UE may not detect a DCI format 1_1 or DCIformat 0_1 for unpaired spectrum operation during the interval.

In an example, if a UE is configured for a secondary cell with higherlayer parameter Default-DL-BWP indicating a default DL BWP among theconfigured DL BWPs and the UE is configured with higher layer parameterbwp-InactivityTimer indicating a timer value, the UE procedures on thesecondary cell may be same as on the primary cell using the timer valuefor the secondary cell and the default DL BWP for the secondary cell.

In an example, if a UE is configured by higher layer parameterActive-BWP-DL-SCell a first active DL BWP and by higher layer parameterActive-BWP-UL-SCell a first active UL BWP on a secondary cell orcarrier, the UE may use the indicated DL BWP and the indicated UL BWP onthe secondary cell as the respective first active DL BWP and firstactive UL BWP on the secondary cell or carrier.

In an example, a wireless device may transmit one or more uplink controlinformation (UCI) via one or more PUCCH resources to a base station. Theone or more UCI may comprise at least one of: HARQ-ACK information;scheduling request (SR); and/or CSI report. In an example, a PUCCHresource may be identified by at least: frequency location (e.g.,starting PRB); and/or a PUCCH format associated with initial cyclicshift of a base sequence and time domain location (e.g., starting symbolindex). In an example, a PUCCH format may be PUCCH format 0, PUCCHformat 1, PUCCH format 2, PUCCH format 3, or PUCCH format 4. A PUCCHformat 0 may have a length of 1 or 2 OFDM symbols and be less than orequal to 2 bits. A PUCCH format 1 may occupy a number between 4 and 14of OFDM symbols and be less than or equal to 2 bits. A PUCCH format 2may occupy 1 or 2 OFDM symbols and be greater than 2 bits. A PUCCHformat 3 may occupy a number between 4 and 14 of OFDM symbols and begreater than 2 bits. A PUCCH format 4 may occupy a number between 4 and14 of OFDM symbols and be greater than 2 bits. The PUCCH resource may beconfigured on a PCell, or a PUCCH secondary cell.

In an example, when configured with multiple uplink BWPs, a base stationmay transmit to a wireless device, one or more RRC messages comprisingconfiguration parameters of one or more PUCCH resource sets (e.g., atmost 4 sets) on an uplink BWP of the multiple uplink BWPs. Each PUCCHresource set may be configured with a PUCCH resource set index, a listof PUCCH resources with each PUCCH resource being identified by a PUCCHresource identifier (e.g., pucch-Resourceid), and/or a maximum number ofUCI information bits a wireless device may transmit using one of theplurality of PUCCH resources in the PUCCH resource set.

In an example, when configured with one or more PUCCH resource sets, awireless device may select one of the one or more PUCCH resource setsbased on a total bit length of UCI information bits (e.g., HARQ-ARQbits, SR, and/or CSI) the wireless device will transmit. In an example,when the total bit length of UCI information bits is less than or equalto 2, the wireless device may select a first PUCCH resource set with thePUCCH resource set index equal to “0”. In an example, when the total bitlength of UCI information bits is greater than 2 and less than or equalto a first configured value, the wireless device may select a secondPUCCH resource set with the PUCCH resource set index equal to “1”. In anexample, when the total bit length of UCI information bits is greaterthan the first configured value and less than or equal to a secondconfigured value, the wireless device may select a third PUCCH resourceset with the PUCCH resource set index equal to “2”. In an example, whenthe total bit length of UCI information bits is greater than the secondconfigured value and less than or equal to a third value (e.g., 1706),the wireless device may select a fourth PUCCH resource set with thePUCCH resource set index equal to “3”.

In an example, a wireless device may determine, based on a number ofuplink symbols of UCI transmission and a number of UCI bits, a PUCCHformat from a plurality of PUCCH formats comprising PUCCH format 0,PUCCH format 1, PUCCH format 2, PUCCH format 3 and/or PUCCH format 4. Inan example, the wireless device may transmit UCI in a PUCCH using PUCCHformat 0 if the transmission is over 1 symbol or 2 symbols and thenumber of HARQ-ACK information bits with positive or negative SR(HARQ-ACK/SR bits) is 1 or 2. In an example, the wireless device maytransmit UCI in a PUCCH using PUCCH format 1 if the transmission is over4 or more symbols and the number of HARQ-ACK/SR bits is 1 or 2. In anexample, the wireless device may transmit UCI in a PUCCH using PUCCHformat 2 if the transmission is over 1 symbol or 2 symbols and thenumber of UCI bits is more than 2. In an example, the wireless devicemay transmit UCI in a PUCCH using PUCCH format 3 if the transmission isover 4 or more symbols, the number of UCI bits is more than 2 and PUCCHresource does not include an orthogonal cover code. In an example, thewireless device may transmit UCI in a PUCCH using PUCCH format 4 if thetransmission is over 4 or more symbols, the number of UCI bits is morethan 2 and the PUCCH resource includes an orthogonal cover code.

In an example, in order to transmit HARQ-ACK information on a PUCCHresource, a wireless device may determine the PUCCH resource from aPUCCH resource set. The PUCCH resource set may be determined asmentioned above. The wireless device may determine the PUCCH resourcebased on a PUCCH resource indicator field in a DCI (e.g., with a DCIformat 1_0 or DCI for 1_1) received on a PDCCH. A 3-bit PUCCH resourceindicator field in the DCI may indicate one of eight PUCCH resources inthe PUCCH resource set. The wireless device may transmit the HARQ-ACKinformation in a PUCCH resource indicated by the 3-bit PUCCH resourceindicator field in the DCI.

In an example, the wireless device may transmit one or more UCI bits viaa PUCCH resource of an active uplink BWP of a PCell or a PUCCH secondarycell. Since at most one active uplink BWP in a cell is supported for awireless device, the PUCCH resource indicated in the DCI is naturally aPUCCH resource on the active uplink BWP of the cell.

In an example, DRX operation may be used by a wireless device (UE) toimprove UE battery lifetime. In an example, in DRX, UE maydiscontinuously monitor downlink control channel, e.g., PDCCH or EPDCCH.In an example, the base station may configure DRX operation with a setof DRX parameters, e.g., using RRC configuration. The set of DRXparameters may be selected based on the application type such that thewireless device may reduce power and resource consumption. In anexample, in response to DRX being configured/activated, a UE may receivedata packets with an extended delay, since the UE may be in DRXSleep/Off state at the time of data arrival at the UE and the basestation may wait until the UE transitions to the DRX ON state.

In an example, during a DRX mode, the UE may power down most of itscircuitry when there are no packets to be received. The UE may monitorPDCCH discontinuously in the DRX mode. The UE may monitor the PDCCHcontinuously when a DRX operation is not configured. During this timethe UE listens to the downlink (DL) (or monitors PDCCHs) which is calledDRX Active state. In a DRX mode, a time during which UE doesn'tlisten/monitor PDCCH is called DRX Sleep state.

FIG. 24 shows an example of the embodiment. A gNB may transmit an RRCmessage comprising one or more DRX parameters of a DRX cycle. The one ormore parameters may comprise a first parameter and/or a secondparameter. The first parameter may indicate a first time value of theDRX Active state (e.g., DRX On duration) of the DRX cycle. The secondparameter may indicate a second time of the DRX Sleep state (e.g., DRXOff duration) of the DRX cycle. The one or more parameters may furthercomprise a time duration of the DRX cycle. During the DRX Active state,the UE may monitor PDCCHs for detecting one or more DCIs on a servingcell. During the DRX Sleep state, the UE may stop monitoring PDCCHs onthe serving cell. When multiple cells are in active state, the UE maymonitor all PDCCHs on (or for) the multiple cells during the DRX Activestate. During the DRX off duration, the UE may stop monitoring all PDCCHon (or for) the multiple cells. The UE may repeat the DRX operationsaccording to the one or more DRX parameters.

In an example, DRX may be beneficial to the base station. In an example,if DRX is not configured, the wireless device may be transmittingperiodic CSI and/or SRS frequently (e.g., based on the configuration).With DRX, during DRX OFF periods, the UE may not transmit periodic CSIand/or SRS. The base station may assign these resources to the other UEsto improve resource utilization efficiency.

In an example, the MAC entity may be configured by RRC with a DRXfunctionality that controls the UE's downlink control channel (e.g.,PDCCH) monitoring activity for a plurality of RNTIs for the MAC entity.The plurality of RNTIs may comprise at least one of: C-RNTI; CS-RNTI;INT-RNTI; SP-CSI-RNTI; SFI-RNTI; TPC-PUCCH-RNTI; TPC-PUSCH-RNTI;Semi-Persistent Scheduling C-RNTI; eIMTA-RNTI; SL-RNTI; SL-V-RNTI;CC-RNTI; or SRS-TPC-RNTI. In an example, in response to being inRRC_CONNECTED, if DRX is configured, the MAC entity may monitor thePDCCH discontinuously using the DRX operation; otherwise the MAC entitymay monitor the PDCCH continuously.

In an example, RRC may control DRX operation by configuring a pluralityof timers. The plurality of timers may comprise: a DRX On duration timer(e.g., drx-onDurationTimer); a DRX inactivity timer (e.g.,drx-InactivityTimer); a downlink DRX HARQ RTT timer (e.g.,drx-HARQ-RTT-TimerDL); an uplink DRX HARQ RTT Timer (e.g.,drx-HARQ-RTT-TimerUL); a downlink retransmission timer (e.g.,drx-RetransmissionTimerDL); an uplink retransmission timer (e.g.,drx-RetransmissionTimerUL); one or more parameters of a short DRXconfiguration (e.g., drx-ShortCycle and/or drx-ShortCycleTimer)) and oneor more parameters of a long DRX configuration (e.g., drx-LongCycle). Inan example, time granularity for DRX timers may be in terms of PDCCHsubframes (e.g., indicated as psf in the DRX configurations), or interms of milliseconds.

In an example, in response to a DRX cycle being configured, the ActiveTime may include the time while at least one timer is running. The atleast one timer may comprise drx-onDuration Timer, drx-InactivityTimer,drx-RetransmissionTimerDL, drx-RetransmissionTimerUL, ormac-ContentionResolutionTimer.

In an example, drx-Inactivity-Timer may specify a time duration forwhich the UE may be active after successfully decoding a PDCCHindicating a new transmission (UL or DL or SL). In an example, thistimer may be restarted upon receiving PDCCH for a new transmission (ULor DL or SL). In an example, the UE may transition to a DRX mode (e.g.,using a short DRX cycle or a long DRX cycle) in response to the expiryof this timer.

In an example, drx-ShortCycle may be a first type of DRX cycle (e.g., ifconfigured) that needs to be followed when UE enters DRX mode. In anexample, a DRX-Config IE indicates the length of the short cycle.

In an example, drx-ShortCycleTimer may be expressed as multiples ofshortDRX-Cycle. The timer may indicate the number of initial DRX cyclesto follow the short DRX cycle before entering the long DRX cycle.

In an example, drx-onDurationTimer may specify the time duration at thebeginning of a DRX Cycle (e.g., DRX ON). In an example,drx-onDurationTimer may indicate the time duration before entering thesleep mode (DRX OFF).

In an example, drx-HARQ-RTT-TimerDL may specify a minimum duration fromthe time new transmission is received and before the UE may expect aretransmission of a same packet. In an example, this timer may be fixedand may not be configured by RRC.

In an example, drx-RetransmissionTimerDL may indicate a maximum durationfor which UE may be monitoring PDCCH when a retransmission from theeNodeB is expected by the UE.

In an example, in response to a DRX cycle being configured, the ActiveTime may comprise the time while a Scheduling Request is sent on PUCCHand is pending.

In an example, in response to a DRX cycle being configured, the ActiveTime may comprise the time while an uplink grant for a pending HARQretransmission can occur and there is data in the corresponding HARQbuffer for synchronous HARQ process.

In an example, in response to a DRX cycle being configured, the ActiveTime may comprise the time while a PDCCH indicating a new transmissionaddressed to the C-RNTI of the MAC entity has not been received aftersuccessful reception of a Random Access Response for the preamble notselected by the MAC entity.

In an example, DRX may be configured for a wireless device. A DL HARQRTT Timer may expire in a subframe and the data of the correspondingHARQ process may not be successfully decoded. The MAC entity may startthe drx-RetransmissionTimerDL for the corresponding HARQ process.

In an example, DRX may be configured for a wireless device. An UL HARQRTT Timer may expire in a subframe. The MAC entity may start thedrx-RetransmissionTimerUL for the corresponding HARQ process.

In an example, DRX may be configured for a wireless device. A DRXCommand MAC control element or a Long DRX Command MAC control elementmay be received. The MAC entity may stop drx-onDurationTimer and stopdrx-InactivityTimer.

In an example, DRX may be configured for a wireless device. In anexample, drx-InactivityTimer may expire or a DRX Command MAC controlelement may be received in a subframe. In an example, in response toShort DRX cycle being configured, the MAC entity may start or restartdrx-ShortCycleTimer and may use Short DRX Cycle. Otherwise, the MACentity may use the Long DRX cycle.

In an example, DRX may be configured for a wireless device. In anexample, drx-ShortCycle Timer may expire in a subframe. The MAC entitymay use the Long DRX cycle.

In an example, DRX may be configured for a wireless device. In anexample, a Long DRX Command MAC control element may be received. The MACentity may stop drx-ShortCycleTimer and may use the Long DRX cycle.

In an example, DRX may be configured for a wireless device. In anexample, if the Short DRX Cycle is used and [(SFN*10)+subframe number]modulo (drx-ShortCycle)=(drxStartOffset) modulo (drx-ShortCycle), thewireless device may start drx-onDurationTimer.

In an example, DRX may be configured for a wireless device. In anexample, if the Long DRX Cycle is used and [(SFN*10)+subframe number]modulo (drx-longCycle)=drxStartOffset, the wireless device may startdrx-onDurationTimer.

FIG. 25 shows example of DRX operation in a legacy system. A basestation may transmit an RRC message comprising configuration parametersof DRX operation. A base station may transmit a DCI for downlinkresource allocation via a PDCCH, to a UE. the UE may start thedrx-InactivityTimer during which, the UE may monitor the PDCCH. Afterreceiving a transmission block (TB) when the drx-InactivityTimer isrunning, the UE may start a HARQ RTT Timer (e.g., drx-HARQ-RTT-TimerDL),during which, the UE may stop monitoring the PDCCH. The UE may transmita NACK to the base station upon unsuccessful receiving the TB. When theHARQ RTT Timer expires, the UE may monitor the PDCCH and start a HARQretransmission timer (e.g., drx-RetransmissionTimerDL). When the HARQretransmission timer is running, the UE may receive a second DCIindicating a DL grant for the retransmission of the TB. If not receivingthe second DCI before the HARQ retransmission timer expires, the UE maystop monitoring the PDCCH.

In an LTE/LTE-A or 5G system, when configured with DRX operation, a UEmay monitor PDCCH for detecting one or more DCIs during the DRX Activetime of a DRX cycle. The UE may stop monitoring PDCCH during the DRXsleep/Off time of the DRX cycle, to save power consumption. In somecases, the UE may fail to detect the one or more DCIs during the DRXActive time, since the one or more DCIs are not addressed to the UE. Forexample, a UE may be an URLLC UE, or a NB-IoT UE, or an MTC UE. The UEmay not always have data to be received from a gNB, in which case,waking up to monitor PDCCH in the DRX active time may result in uselesspower consumption. A wake-up mechanism combined with DRX operation maybe used to further reduce power consumption specifically in a DRX activetime. FIG. 26A and FIG. 26B show examples of the wake-up mechanism.

In FIG. 26A, a gNB may transmit one or more messages comprisingparameters of a wake-up duration (or a power saving duration), to a UE.The wake-up duration may be located a number of slots (or symbols)before a DRX On duration of a DRX cycle. The number of slots (orsymbols), or, referred to as a gap between a wakeup duration and a DRXon duration, may be configured in the one or more RRC messages orpredefined as a fixed value. The gap may be used for at least one of:synchronization with the gNB; measuring reference signals; and/orretuning RF parameters. The gap may be determined based on a capabilityof the UE and/or the gNB. In an example, the wake-up mechanism may bebased on a wake-up signal. The parameters of the wake-up duration maycomprise at least one of: a wake-up signal format (e.g., numerology,sequence length, sequence code, etc.); a periodicity of the wake-upsignal; a time duration value of the wake-up duration; a frequencylocation of the wake-up signal. In LTE Re.15 specification, the wake-upsignal for paging may comprise a signal sequence (e.g., Zadoff-Chusequence) generated based on a cell identification (e.g., cell ID) as:

${w(m)} = {{\theta_{n_{f},n_{s}}(m)} \cdot {e^{- \frac{j\;\pi\;{{un}{({n + 1})}}}{131}}.}}$In the example, m=0, 1, . . . , 132M−1, and n=m mod 132.

In an example,

${\theta_{n_{f},n_{s}}(m)} = \left\{ {\begin{matrix}{1,\ {{{if}\mspace{14mu}{c_{n_{f},n_{s}}\left( {2m} \right)}} = {{0\mspace{14mu}{and}\mspace{14mu}{c_{n_{f},n_{s}}\left( {{2m} + 1} \right)}} = 0}}} \\{{- 1},\ {{{if}\mspace{14mu}{c_{n_{f},n_{s}}\left( {2m} \right)}} = {{0\mspace{14mu}{and}\mspace{14mu}{c_{n_{f},n_{s}}\left( {{2m} + 1} \right)}} = 1}}} \\{{j,\ {{{if}\mspace{14mu}{c_{n_{f},n_{s}}\left( {2m} \right)}} = {{1\mspace{14mu}{and}\mspace{14mu}{c_{n_{f},n_{s}}\left( {{2m} + 1} \right)}} = 0}}}\ } \\{{- j},\ {{{if}\mspace{14mu}{c_{n_{f},n_{s}}\left( {2m} \right)}} = {{1\mspace{14mu}{and}\mspace{14mu}{c_{n_{f},n_{s}}\left( {{2m} + 1} \right)}} = 1}}}\end{matrix},} \right.$where u=(N_(ID) ^(cell) mod 126)+3. N_(ID) ^(cell) may be a cell ID ofthe serving cell. M may be a number of subframes in which the WUS may betransmitted, 1≤M≤M_(WUSmax), where M_(WUSmax) is the maximum number ofsubframes in which the WUS may be transmitted. c_(n) _(f) _(,n) _(s)(i), i=0, 1, . . . , 2·132M−1 may be a scrambling sequence (e.g., alength-31 Gold sequence), which may be initialized at start oftransmission of the WUS with:

${c_{{init}\;\_\;{WUS}} = {{\left( {N_{ID}^{cell} + 1} \right)\left( {{\left( {{10n_{f\;\_\;{start}\;\_\;{PO}}} + \left\lfloor \frac{n_{s\;\_\;{start}\;\_\;{PO}}}{2} \right\rfloor} \right){mod}\mspace{11mu} 2048} + 1} \right)2^{9}} + N_{ID}^{cell}}},$where n_(f_start_PO) is the first frame of a first paging occasion towhich the WUS is associated, and n_(s_start_PO) is a first slot of thefirst paging occasion to which the WUS is associated.

In an example, the parameters of the wake-up duration may be pre-definedwithout RRC configuration. In an example, the wake-up mechanism may bebased on a wake-up channel (e.g., a PDCCH, or a DCI). The parameters ofthe wake-up duration may comprise at least one of: a wake-up channelformat (e.g., numerology, DCI format, PDCCH format); a periodicity ofthe wake-up channel; a control resource set and/or a search space of thewake-up channel. When configured with the parameters of the wake-upduration, the UE may monitor the wake-up signal or the wake-up channelduring the wake-up duration. In response to receiving the wake-upsignal/channel, the UE may wake-up to monitor PDCCHs as expectedaccording to the DRX configuration. In an example, in response toreceiving the wake-up signal/channel, the UE may monitor PDCCHs in theDRX active time (e.g., when drx-onDurationTimer is running). The UE maygo back to sleep if not receiving PDCCHs in the DRX active time. The UEmay keep in sleep during the DRX off duration of the DRX cycle. In anexample, if the UE doesn't receive the wake-up signal/channel during thewake-up duration, the UE may skip monitoring PDCCHs during the DRXactive time. This mechanism may reduce power consumption for PDCCHmonitoring during the DRX active time. In the example, during thewake-up duration, a UE may monitor the wake-up signal/channel only.During the DRX off duration, the UE may stop monitoring PDCCHs and thewake-up signal/channel. During the DRX active duration, the UE maymonitor PDCCHs except of the wake-up signal/channel, if receiving thewake-up signal/channel in the wake-up duration. In an example, the gNBand/or the UE may apply the wake-up mechanism in paging operation whenthe UE is in an RRC_idle state or an RRC_inactive state, or in aconnected DRX operation (C-DRX) when the UE is in an RRC_CONNECTEDstate.

In an example, a wake-up mechanism may be based on a go-to-sleepsignal/channel. FIG. 26B shows an example. A gNB may transmit one ormore messages comprising parameters of a wake-up duration (or a powersaving duration), to a UE. The one or more messages may comprise atleast one RRC message. The at least one RRC message may comprise one ormore cell-specific or cell-common RRC messages (e.g., ServingCellConfigIE, ServingCellConfigCommon IE, MAC-CellGroupConfig IE). The wake-upduration may be located a number of slots (or symbols) before a DRX Onduration of a DRX cycle. The number of slots (or symbols) may beconfigured in the one or more RRC messages or predefined as a fixedvalue. In an example, the wake-up mechanism may be based on ago-to-sleep signal. The parameters of the wake-up duration may compriseat least one of: a go-to-sleep signal format (e.g., numerology, sequencelength, sequence code, etc.); a periodicity of the go-to-sleep signal; atime duration value of the wake-up duration; a frequency location of thego-to-sleep signal. In an example, the wake-up mechanism may be based ona go-to-sleep channel (e.g., a PDCCH, or a DCI). The parameters of thewake-up duration may comprise at least one of: a go-to-sleep channelformat (e.g., numerology, DCI format, PDCCH format); a periodicity ofthe go-to-sleep channel; a control resource set and/or a search space ofthe go-to-sleep channel. When configured with the parameters of thewake-up duration, the UE may monitor the go-to-sleep signal or thego-to-sleep channel during the wake-up duration. In response toreceiving the go-to-sleep signal/channel, the UE may go back to sleepand skip monitoring PDCCHs during the DRX active time. In an example, ifthe UE doesn't receive the go-to-sleep signal/channel during the wake-upduration, the UE may monitor PDCCHs during the DRX active time. Thismechanism may reduce power consumption for PDCCH monitoring during theDRX active time.

In an example, a power saving operation associated with a DRX operationand based on a wake-up or go-to-sleep indication may be extended to acase regardless of a DRX operation. In an example a base station and/ora wireless device may enable or disable power saving operationdynamically, regardless of a DRX configuration.

FIG. 27 shows an example embodiment of dynamic activating/deactivatingpower saving mode. A base station (e.g., gNB in FIG. 27) may transmit toa wireless device (e.g., UE in FIG. 27), one or more RRC messagescomprising configuration parameters of a power saving (e.g., PS in FIG.27) mode. The one or more RRC messages may comprise one or morecell-specific or cell-common RRC messages (e.g., ServingCellConfig IE,ServingCellConfigCommon IE, MAC-CellGroupConfig IE). The one or more RRCmessages may comprise: RRC connection reconfiguration message (e.g.,RRCReconfiguration); RRC connection reestablishment message (e.g.,RRCRestablishment); and/or RRC connection setup message (e.g.,RRCSetup). In an example, the cell may be a primary cell (e.g., PCell),a PUCCH secondary cell if secondary PUCCH group is configured, or aprimary secondary cell (e.g., PSCell) if dual connectivity isconfigured. The cell may be identified by (or associated with) a cellspecific identity (e.g., cell ID).

In an example, the configuration parameters may comprise parameters ofat least one power saving mode configuration on the cell. Each of the atleast one power saving mode configuration may be identified by a powersaving mode configuration identifier (index, indicator, or ID).

In an example, a power saving mode of a power saving mode configurationmay be based on a power saving signal (e.g., a wake-up signal as shownin FIG. 26A, and/or a go-to-sleep as shown in FIG. 26B). The parametersof a power saving signal-based power saving mode configuration maycomprise at least one of: a window size of a time window indicating aduration when the power saving signal may be transmitted; a value of aperiodicity of the transmission of the power saving signal; a timeresource on which the power saving signal may be transmitted; afrequency resource on which the power saving signal may be transmitted;a BWP on which the wireless device may monitor the power saving signal;and/or a cell on which the wireless device may monitor the power savingsignal.

In an example, a power saving mode may be based on a power savingchannel (e.g., a wake-up channel (WUCH)). The power saving channel maycomprise a downlink control channel (e.g., a PDCCH) dedicated for thepower saving mode. The parameters of a power saving channel-based powersaving mode configuration may comprise at least one of: a time windowindicating a duration when the base station may transmit a power savinginformation (e.g., a wake-up information, or a go-to-sleep information)via the power saving channel; parameters of a control resource set(e.g., time, frequency resource and/or TCI state indication of the powersaving channel); a periodicity of the transmission of the power savingchannel; a DCI format of the power saving information; a BWP on whichthe wireless device may monitor the power saving channel; and/or a cellon which the wireless device may monitor the power saving channel.

In an example, the wireless device in an RRC connected state maycommunicate with the base station in a full function mode (or a normalfunction mode). In the full function mode, the wireless device maymonitor PDCCHs continuously if a DRX operation is not configured to thewireless device. In the full function mode, the wireless device maymonitor the PDCCHs discontinuously by applying one or more DRXparameters of the DRX operation if the DRX operation is configured(e.g., as shown in FIG. 24 or FIG. 25). In the full function mode, thewireless device may: monitor PDCCHs; transmit SRS; transmit on RACH;transmit on UL-SCH; and/or receive DL-SCH. In an example, a fullfunction mode on a cell may be similar to or equivalent to an activestate of a cell.

As shown in FIG. 27, the wireless device may communicate with the basestation in the full function mode. The base station may transmit to thewireless device, a first command (e.g., 1^(st) command in FIG. 27)indicating enabling a power saving (e.g., PS as shown in FIG. 27)operation, e.g., when a data service is suitable for the PS mode, or thewireless device may work in the PS mode due to a reduced availableprocessing power at the wireless device. The first command may be a DCIwith a first DCI format (e.g., one of DCI format 0-0/0-1, 1-0/1-1, or2-0/2-1/2-2/2-3 already defined in 3GPP NR specifications) or a secondDCI format (e.g., a new DCI format to be defined in future). The firstcommand may be a MAC CE, or an RRC message. The wireless device may, inresponse to receiving the first command, enable (or activate) the PSmode and/or switch to the PS mode from the full function mode. In anexample, in the PS mode, the wireless device may perform at least oneof: monitoring for the PS signal/channel; stopping transmittingPUCCH/PUSCH/SRS/PRACH; stopping receiving PDSCH; and/or not monitorPDCCHs. The PS mode may be referred to as a PS operation, or a PS state.

As shown in FIG. 27, the base station may transmit to the wirelessdevice, a second command (2^(nd) command in FIG. 27) indicatingdisabling (or deactivating) the PS mode. The base station may transmitthe second command in the wakeup window (e.g., which may periodicallyoccur in time domain according to one or more configuration parametersof the PS mode). The wireless device may receive the second command whenthe wireless device monitors the PS signal/channel during the wakeupwindow. The second command may be a DCI with a first DCI format (e.g.,one of DCI format 0-0/0-1, 1-0/1-1, or 2-0/2-1/2-2/2-3 already definedin 3GPP NR specifications) or a second DCI format (e.g., a new DCIformat to be defined in future). The second command may be a MAC CE, oran RRC message. The wireless device may, in response to receiving thesecond command, disable (or deactivate) the PS mode and/or switch to thefull function mode from the PS mode. In response to switching to thefull function mode as shown in FIG. 27, the wireless device may monitorPDCCHs as configured. In response to switching to the full functionmode, the wireless device may monitor PDCCHs for detecting DCIs with CRCbits scrambled by at least one of: C-RNTI; P-RNTI; SI-RNTI; CS-RNTI;RA-RNTI; TC-RNTI; MCS-C-RNTI; TPC-PUCCH-RNTI; TPC-PUSCH-RNTI;TPC-SRS-RNTI; INT-RNTI; SFI-RNTI; and/or SP-CSI-RNTI. In response toswitching to the full function mode, the wireless device may transmitSRS; transmit on RACH; transmit on UL-SCH; and/or receive DL-SCH.

FIG. 28 shows an example embodiment of power saving mechanism. A basestation (e.g., gNB in FIG. 28) may transmit to a wireless device (e.g.,UE in FIG. 28), one or more RRC messages comprising first configurationparameters of a power saving (e.g., PS in FIG. 28) mode.

In an example, the first configuration parameters may indicate one ormore PS parameters of a plurality of power saving modes. The one or morePS parameters of a first power saving mode (PS mode 1 as shown in FIG.28) may indicate at least one of: one or more first search spaces and/orone or more first control resource sets (SS1/CORESET1 in FIG. 28); oneor more first DCI formats (DCI format 0-0, 1-0, or any other DCIformat); and/or one or more first PS signal parameters (e.g., PS signalformat; periodicity; time/frequency location). The one or more PSparameters of a second power saving mode (PS mode 2 as shown in FIG. 28)may indicate at least one of: one or more second search spaces and/orone or more second control resource sets (SS1/CORESET1 and SS2/CORESET2as shown in FIG. 28); one or more second DCI formats; and/or one or moresecond PS signal parameters. In an example, one or more PS parameters ofa power saving mode may indicate that no search spaces and/or no controlresource sets is configured on a cell.

In an example, the one or more RRC messages may further comprise secondconfiguration parameters indicating one or more third search spaces andone or more third control resource sets (e.g., SS1/CORESET1, SS2/CORSET2. . . , and SSn/CORESETn as shown in FIG. 28); one or more third DCIformats.

In an example, the wireless device in an RRC connected state maycommunicate with the base station in a full function mode. In the fullfunction mode, the wireless device may monitor PDCCHs for the one ormore third DCI formats, on the one or more third search spaces of theone or more third control resource sets. In the full function mode, thewireless device may monitor the PDCCHs discontinuously by applying oneor more DRX parameters of the DRX operation if the DRX operation isconfigured (e.g., as shown in FIG. 24 and/or FIG. 25). In the fullfunction mode, the wireless device may: monitor PDCCHs; transmit SRS;transmit on RACH; transmit on UL-SCH; and/or receive DL-SCH. In anexample, a full function mode of a cell may be similar to (or equivalentto) an active state of the cell, when the wireless device may: monitorPDCCHs on/for the cell; transmit SRS on the cell; transmit on RACH onthe cell; transmit on UL-SCH of the cell; transmit uplink controlsignals (e.g., CSI/SR/PUCCH) for the cell; and/or receive DL-SCH via thecell.

As shown in FIG. 28, the wireless device may communicate with the basestation in the full function mode. The base station may transmit to thewireless device, a first DCI (e.g., 1^(st) DCI in FIG. 28) indicatingenabling a first power saving mode (e.g., PS mode 1 as shown in FIG.28), e.g., when a data service is suitable for the first PS mode, or thewireless device may work in the first PS mode. The first DCI may betransmitted with a first DCI format (e.g., one of DCI formats 0-0/0-1,1-0/1-1, or 2-0/2-1/2-2/2-3 already defined in 3GPP NR specifications)or a second DCI format (e.g., a new DCI format to be defined in future).In response to receiving the first DCI, the wireless device may enable(or activate) the first PS mode and/or switch to the first PS mode fromthe full function mode. In an example, as shown in FIG. 28, in the firstPS mode, the wireless device may monitor a first PDCCH for at least oneDCI with the one or more first DCI formats, on the one or more firstsearch spaces of the one or more first control resource sets (e.g.,SS1/CORESET1 as shown in FIG. 28). In the first PS mode, the wirelessdevice may monitor the PS signal according to the one or more first PSsignal parameters. In the first PS mode, the wireless device may notmonitor PDCCHs on the one or more second search spaces of the one ormore second control resource sets. In the first PS mode, the wirelessdevice may not monitor PDCCHs on the one or more third search spaces ofthe one or more third control resource sets.

Similarly, as shown in FIG. 28, the base station may transmit to thewireless device, a second DCI (e.g., 2^(nd) DCI in FIG. 28) indicatingenabling (or activating) a second PS mode. (e.g., PS mode 2 as shown inFIG. 28). In response to receiving the second DCI, the wireless devicemay enable (or activate) the second PS mode and/or switch to the secondPS mode from the first PS mode. In an example, as shown in FIG. 28, inthe second PS mode, the wireless device may monitor a second PDCCH forat least one DCI with the one or more second DCI formats, on the one ormore second search spaces of the one or more second control resourcesets (e.g., SS1/CORESET1, SS2/CORESET2 as shown in FIG. 28). In thesecond PS mode, the wireless device may monitor the PS signal accordingto the one or more second PS signal parameters. In the second PS mode,the wireless device may not monitor PDCCHs on the one or more firstsearch spaces of the one or more first control resource sets. In thesecond PS mode, the wireless device may not monitor PDCCHs on the one ormore third search spaces of the one or more third control resource sets.

Similarly, as shown in FIG. 28, the base station may transmit to thewireless device, a third DCI (e.g., 3^(rd) DCI in FIG. 28) indicatingenabling (or activating) full function mode. In response to receivingthe third DCI, the wireless device may disable (or deactivate) the firstPS mode and the second PS mode. In an example, as shown in FIG. 28, inthe full function mode, the wireless device may monitor a third PDCCHfor at least one DCI with the one or more third DCI formats, on the oneor more third search spaces of the one or more third control resourcesets (e.g., SS1/CORESET1, SS2/CORESET2 . . . , SSn/CORESETn, as shown inFIG. 28). In the full function mode, the wireless device may not monitorPDCCHs on the one or more first search spaces of the one or more firstcontrol resource sets. In the full function mode, the wireless devicemay not monitor PDCCHs on the one or more second search spaces of theone or more second control resource sets.

FIG. 29 shows an example embodiment of power saving mechanism, e.g.,when DRX is configured. A base station (e.g., gNB in FIG. 29) maytransmit to a wireless device (e.g., UE in FIG. 29), one or more RRCmessages comprising first configuration parameters of a plurality of DRXconfigurations. In an example, the first configuration parameters of afirst DRX configuration (e.g., 1^(st) DRX configuration as shown in FIG.29) may indicate: one or more first search spaces (e.g., 1^(st) SSs asshown in FIG. 29) and/or one or more first control resource sets (e.g.,1^(st) CORESETs as shown in FIG. 29); one or more first RNTIs (e.g.,1^(st) RNTIs as shown in FIG. 29) of PDCCH candidates monitoring; one ormore first DCI formats (e.g., 1^(st) DCI formats as shown in FIG. 29);one or more first DRX timers; and/or one or more first PS signalparameters. In an example, the first configuration parameters of asecond DRX configuration (e.g., 2^(nd) DRX configuration as shown inFIG. 29) may indicate: one or more second search spaces (e.g., 2^(nd)SSs as shown in FIG. 29) and/or one or more second control resource sets(e.g., 2^(nd) CORESETs as shown in FIG. 29); one or more second RNTIs(e.g., 2^(nd) RNTIs as shown in FIG. 29) of PDCCH candidates monitoring;one or more second DCI formats (e.g., 2^(nd) DCI formats as shown inFIG. 29); one or more second DRX timers; and/or one or more second PSsignal parameters.

In an example, the one or more RRC messages may further comprise secondconfiguration parameters indicating: one or more third search spaces(e.g., 3^(rd) SSs as shown in FIG. 29) and one or more third controlresource sets (e.g., 3^(rd) CORESETs as shown in FIG. 29); one or morethird DCI formats (e.g., 3^(rd) DCI formats in FIG. 29); one or morethird RNTIs (e.g., 3^(rd) RNTIs as shown in FIG. 29) of PDCCH candidatesmonitoring.

As shown in FIG. 29, the wireless device may communicate with the basestation in the full function mode. The base station may transmit to thewireless device, a first DCI (e.g., 1^(st) DCI in FIG. 29) indicatingenabling the first DRX configuration (e.g., 1^(st) DRX configuration asshown in FIG. 29). In response to receiving the first DCI, the wirelessdevice may enable (or activate) the first DRX configuration. In anexample, as shown in FIG. 29, with the first DRX configuration, thewireless device may monitor a first PDCCH, based on one or moreparameters of the first DRX configuration, for at least one DCI with theone or more first DCI formats based on the one or more first RNTIs, onthe one or more first search spaces of the one or more first controlresource sets. Similarly, as shown in FIG. 29, the base station maytransmit to the wireless device, a second DCI (e.g., 2^(nd) DCI in FIG.29) indicating enabling the second DRX configuration (e.g., 2^(nd) DRXconfiguration as shown in FIG. 29). In response to receiving the secondDCI, the wireless device may enable (or activate) the second DRXconfiguration. In an example, as shown in FIG. 29, with the second DRXconfiguration, the wireless device may monitor a second PDCCH, based onone or more parameters of the second DRX configuration, for at least oneDCI with the one or more second DCI formats based on the one or moresecond RNTIs, on the one or more second search spaces of the one or moresecond control resource sets.

Similarly, as shown in FIG. 29, the base station may transmit to thewireless device, a third DCI (e.g., 3^(rd) DCI in FIG. 29) indicatingenabling (or activating) full function mode. In response to receivingthe third DCI, the wireless device may disable (or deactivate) the firstDRX configuration and/or the second DRX configuration. In an example, asshown in FIG. 29, in the full function mode, the wireless device maymonitor a third PDCCH, for at least one DCI with the one or more thirdDCI formats based on the one or more third RNTIs, on the one or morethird search spaces of the one or more third control resource sets.

In an example, as shown in FIGS. 28 and/or 29, search spaces, controlresource sets, RNTIs, and/or DCI formats, with which a wireless devicemay monitor a PDCCH in power saving mode, may be different from (orindependently/separately configured with) those search spaces, controlresource sets, RNTIs and/or DCI formats with which the wireless devicemay monitor the PDCCH in full function mode (or not in power savingmode). In an example, as shown in FIGS. 28 and/or 29, a first number ofsearch spaces, control resource sets, RNTIs, and/or DCI formats, withwhich a wireless device may monitor a PDCCH in power saving mode, may beless than a second number of search spaces, control resource sets, RNTIsand/or DCI formats with which the wireless device may monitor the PDCCHin full function mode (or not in power saving mode). By theseembodiments, a base station and/or a wireless device may control powerconsumption appropriately according to whether the wireless device isworking in power saving mode or in full function mode.

In an example, a base station may transmit one or more RRC messagecomprising one or more channel state information (CSI) configurationparameters comprising at least: one or more CSI-RS resource settings;one or more CSI reporting settings, and one CSI measurement setting.

In an example, a CSI-RS resource setting may comprise one or more CSI-RSresource sets. In an example, there may be one CSI-RS resource set forperiodic CSI-RS, or semi-persistent (SP) CSI-RS. In an example, a CSI-RSresource set may comprise at least one of: one CSI-RS type (e.g.,periodic, aperiodic, or semi-persistent); one or more CSI-RS resourcescomprising at least one of: CSI-RS resource configuration identity (orindex); number of CSI-RS ports; CSI-RS configuration (symbol and RElocations in a subframe); CSI-RS subframe configuration (subframelocation, offset, and/or periodicity in radio frame); CSI-RS powerparameter; CSI-RS sequence parameter; CDM type parameter; frequencydensity; transmission comb; and/or QCL parameters.

In an example, one or more CSI-RS resources may be transmittedperiodically, using aperiodic transmission, using a multi-shottransmission, and/or using a SP transmission. In a periodictransmission, the configured CSI-RS resource may be transmitted using aconfigured periodicity in time domain. In an aperiodic transmission, theconfigured CSI-RS resource may be transmitted in a dedicated time slotor subframe. In a multi-shot or SP transmission, the configured CSI-RSresource may be transmitted within a configured period. In an example, agNB may transmit one or more SP CSI-RSs with a periodicity. The gNB maystop transmission of the one or more SP CSI-RSs if the CSI-RS isconfigured with a transmission duration. The gNB may stop transmissionof the one or SP CSI-RSs in response to transmitting a MAC CE or DCI fordeactivating (or stopping the transmission of) the one or more SPCSI-RSs.

In an example, a CSI reporting setting may comprise at least one of: onereport configuration identifier; one report type; one or more reportedCSI parameter(s); one or more CSI type (e.g., type I or type II); one ormore codebook configuration parameters; one or more parametersindicating time-domain behavior; frequency granularity for CQI and PMI;and/or measurement restriction configurations. The report type mayindicate a time domain behavior of the report (aperiodic, SP, orperiodic). The CSI reporting setting may further comprise at least oneof: one periodicity parameter; one duration parameter; and/or one offset(e.g., in unit of slots), if the report type is a periodic or SP report.The periodicity parameter may indicate a periodicity of a CSI report.The duration parameter may indicate a duration of CSI reporttransmission. The offset parameter may indicate value of timing offsetof CSI report.

In an example, a CSI measurement setting may comprise one or more linkscomprising one or more link parameters. The link parameter may compriseat least one of: one CSI reporting setting indication, CSI-RS resourcesetting indication, and one or more measurement parameters.

FIG. 30 shows example of various CSI report triggering mechanisms. In anexample, a gNB may trigger a CSI reporting by transmitting an RRCmessage, or a MAC CE, or a DCI, as shown in FIG. 30. In an example, a UEmay perform periodic CSI reporting (e.g., P-CSI reporting in FIG. 30)based on an RRC message and one or more periodic CSI-RSs. In an example,a UE may not be allowed (or required) to perform periodic CSI reportingbased on one or more aperiodic CSI-RSs and/or one or more SP CSI-RSs. Inan example, a UE may perform SP CSI reporting (e.g., SP-CSI reporting inFIG. 30) based on a MAC CE and/or a DCI and based on one or moreperiodic or SP CSI-RSs. In an example, a UE may not be allowed (orrequired) to perform SP CSI reporting based on one or more aperiodicCSI-RSs. In an example, a UE may perform aperiodic CSI reporting (e.g.,Ap-CSI reporting in FIG. 30) based on a DCI and based on one or moreperiodic, SP, or aperiodic CSI-RSs. In an example, a wireless device mayperform a SP CSI reporting on a PUCCH in response to the SP CSIreporting being activated (or triggered) by a MAC CE. The wirelessdevice may perform a SP CSI reporting on a PUSCH in response to the SPCSI reporting being activated (or triggered). In an example, a basestation may instruct (e.g., by transmitting the MAC CE) a wirelessdevice to perform SP CSI reporting on PUCCH when a compact CSI (e.g.,small amount of report contents) is required by the base station, or DCItransmission is not convenient for the base station, and/or the CSI isnot urgently required by the base station. In an example, a base stationmay instruct (e.g., by transmitting the DCI) a wireless device toperform SP CSI reporting on PUSCH when a large-sized CSI (e.g., bigamount of report contents) is required by the base station, or a DCItransmission is convenient for the base station, and/or the CSI isurgently required by the base station.

FIG. 31 shows an example of SP CSI reporting in a cell. In an example, abase station (e.g., gNB in FIG. 31) may transmit to a wireless device(e.g., UE in FIG. 31) one or more RRC messages comprising configurationparameters of one or more SP CSI reporting configurations. The basestation may transmit to the wireless device, at slot (or subframe) n, a1^(st) MAC CE or DCI indicating an activation of a SP CSI reportingconfiguration of the one or more SP CSI reporting configurations. Thebase station may start transmitting one or more SP CSI-RSs at slot (orsubframe) n+k. In an example, k may be zero or an integer greater thanzero, configured by an RRC message, or be predefined as a fixed value.

As shown in FIG. 31, after or in response to receiving the 1^(st) MAC CEor the 1^(st) DCI, the wireless device may perform CSI measurements onone or more CSI-RSs according to the activated SP CSI reportingconfiguration. In an example, after or in response to receiving the1^(st) MAC CE or the 1^(st) DCI, the wireless device may transmit one ormore SP CSI reports (e.g., based on the CSI measurements) atslot/subframe n+k+m, n+k+m+l, n+k+m+2*l, etc., with a periodicity of lsubframes (or slots). The periodicity may be configured in an RRCmessage. In an example, the UE may receive a 2^(nd) MAC/DCI indicating adeactivation of the SP CSI reporting configuration. After receiving the2^(nd) MAC/DCI, or in response to the 2^(nd) MAC/DCI, the UE may stoptransmitting the one or more SP CSI reports. In an example, k may bezero (configured, or predefined). In an example, m (e.g., when k=0) maybe a time offset between the wireless device receives the 1^(st) MACCE/DCI for activation of the SP CSI reporting and the wireless devicetransmits a first SP CSI report of the one or more SP CSI reports. In anexample, m may be configured by an RRC message, or be predefined as afixed value. A value of m may depend on the capability of a UE and/orthe network.

As shown in FIG. 31, a wireless device may assume a CSI-RS transmissionperiod (e.g., CSI-RS transmission Window in FIG. 30), in response to a1^(st) MAC CE/DCI for activation of a SP CSI reporting configuration andbased on one or more configuration parameters of the activated SP CSIreporting configuration. The base station may transmit one or moreCSI-RSs at least in the CSI-RS transmission period, based on theactivated SP CSI reporting configuration. In an example, the wirelessdevice may perform CSI measurements on the one or more CSI-RSstransmitted in the CSI-RS transmission period.

FIG. 32 shows an example embodiment of SP CSI reporting mechanism when aSP CSI reporting is triggered by a MAC CE. In an example, a base station(e.g., gNB in FIG. 32) may transmit to a wireless device (e.g., UE inFIG. 32) one or more RRC messages comprising one or more BWPconfiguration parameters of one or more BWPs of a cell. The one or moreRRC messages may further indicate a BWP timer value of a BWP inactivitytimer. The one or more BWPs may comprise a default BWP. The cell may bea PCell or a SCell. The one or more BWP configuration parameters of aBWP of the one or more BWPs may comprise at least one of: a BWP index;one or more RS (e.g., SSB/CSI-RS) resource settings; one or more CSIreporting settings; and one CSI measurement setting.

In an example, a first BWP (e.g., BWP 1 in FIG. 32) may be an active BWPon which a gNB may communicate with a UE. The first BWP may be one of aDL BWP and an UL BWP. In an example, as shown in FIG. 32, the UE mayreceive a MAC CE indicating activation of SP CSI reporting on PUCCH.After or in response to the MAC CE, the UE may transmit one or more SPCSI reports via a PUCCH resource of an active UL BWP (e.g., the firstBWP when the first BWP is an UL BWP), according to a SP CSI reportingconfiguration indicated by the MAC CE. The UE may transmit the one ormore SP CSI reports with a report periodicity via a PUCCH resource ofthe active UL BWP. The one or more SP CSI reports may be measured basedon one or more RSs (e.g., SSBs/CSI-RSs) on an active DL BWP. In anexample, after or in response to the MAC CE, the UE may transmit one ormore SP CSI reports for the first BWP, when the first BWP is a DL BWP.The UE may start (or restart) a BWP inactivity timer after or inresponse to receiving via the DL BWP a downlink assignment or an uplinkgrant.

In an example, as shown in FIG. 32, a base station may transmit to a UEa first DCI indicating an active BWP switching from a first BWP (e.g.,BWP 1 in FIG. 32) to a second BWP (e.g., BWP 2 in FIG. 32). After or inresponse to the first DCI, the UE may suspend transmissions of SP CSIreports. The UE may suspend the transmissions of SP CSI reports after orin response to an expiry of a BWP inactivity timer. In an example, theUE may resume the transmissions of SP CSI reports after or in responseto receiving a second DCI indicating the active BWP switching from thesecond BWP to the first BWP. In an example, the UE may resume thetransmissions of SP CSI reports after or in response to an expiry of aBWP inactivity timer.

FIG. 33 shows an example embodiment of SP CSI reporting mechanism whenthe SP CSI reporting is triggered by a DCI. In an example, a basestation (e.g., gNB in FIG. 33) may transmit to a wireless device (e.g.,UE in FIG. 33) one or more RRC messages comprising one or more BWPconfiguration parameters of one or more BWPs of a cell. The one or moreRRC messages may further indicate a BWP timer value of a BWP inactivitytimer. The one or more BWPs may comprise a default BWP. The cell may bea PCell or a SCell. The one or more BWP configuration parameters of aBWP of the one or more BWPs may comprise at least one of: a BWP index;one or more RS (e.g., SSB/CSI-RS) resource settings; one or more CSIreporting settings; and one CSI measurement setting.

In an example, a first BWP (e.g., BWP 1 in FIG. 33) may be an active BWPon which a gNB may communicate with a UE. The first BWP may be a DL BWPor an UL BWP. In an example, as shown in FIG. 33, the UE may receive aDCI indicating activation of SP CSI reporting on PUSCH. After or inresponse to the DCI, the UE may transmit one or more SP CSI reports viaa PUSCH resource of an active UL BWP (e.g., the first BWP when the firstBWP is an UL BWP), according to a SP CSI reporting configurationindicated by the DCI. The UE may transmit the one or more SP CSI reportswith a report periodicity via a PUSCH resource of the active UL BWP. Theone or more SP CSI reports may be measured based on one or more RSs(e.g., SSBs/CSI-RSs) on a DL BWP. The UE may start (or restart) a BWPinactivity timer after or in response to receiving via the DL BWP adownlink assignment or an uplink grant.

In an example, as shown in FIG. 33, a base station may transmit to a UEa first DCI indicating an active BWP switching from a first BWP (e.g.,BWP 1 in FIG. 33) to a second BWP (e.g., BWP 2 in FIG. 33). The secondBWP may be a DL BWP or an UL BWP. In an example, after or in response tothe first DCI, the UE may suspend transmissions of SP CSI reports on thefirst BWP (e.g., when the first DCI indicating an active UL BWPswitching). In an example, the UE may suspend the transmissions of SPCSI reports on the first BWP after or in response to an expiry of a BWPinactivity timer. In an example, after or in response to the first DCI,the UE may suspend transmissions of SP CSI reports for the first BWP(e.g., when the first DCI indicating an active DL BWP switching). In anexample, the UE may suspend the transmissions of SP CSI reports for thefirst BWP after or in response to an expiry of a BWP inactivity timer.

In an example, the UE may receive a second DCI indicating the active BWPswitching from the second BWP to the first BWP. The UE may notautomatically resume the transmissions of SP CSI reports after or inresponse to receiving the second DCI. In an example, the UE may resumethe transmissions of the SP CSI reports after or in response toreceiving the second DCI and a third DCI indicating an activation of theSP CSI reports. In an example, the second DCI and the third DCI may betransmitted in a DCI format comprising first field(s) indicating activeBWP switching from the second BWP to the first BWP and second field(s)indicating re-activation of SP CSI reports. In an example, the secondDCI and the third DCI may be transmitted in two DCI formats, a first DCIformat comprising fields indicating active BWP switching from the secondBWP to the first BWP, and a second DCI format comprising fieldsindicating (re-)activation of the SP CSI reports.

In existing technologies, a wireless device may transmit on a PUCCH of afirst BWP, one or more SP CSI reports for a SP CSI reportingconfiguration, in response to the SP CSI reporting configuration beingactivated by a MAC CE and the first BWP being in active state. Thewireless device may suspend the transmission of the one or more SP CSIreports in response to switching from the first BWP to a second BWP asan active BWP. In an example, in response to switching to the first BWPas the active BWP, the wireless device may resume the transmission ofthe one or more SP CSI reports before the wireless device receives a MACCE deactivating the SP CSI reporting configuration.

In existing technologies, a wireless device may transmit on a PUSCH of afirst BWP, one or more SP CSI reports for a SP CSI reportingconfiguration, in response to the SP CSI reporting configuration beingactivated by a DCI and the first BWP being in active state. The wirelessdevice may deactivate the SP CSI reporting configuration in response toswitching from the first BWP to a second BWP as an active BWP. Thewireless device may stop the transmission of the one or more SP CSIreports in response to deactivating the SP CSI reporting configuration.In an example, in response to switching to the first BWP as the activeBWP, the wireless device may not resume the transmission of the one ormore SP CSI reports before the wireless device receives a DCI activatingthe SP CSI reporting configuration.

In an example, the wireless device may receive a command indicatingswitching to a power saving mode (e.g., by implementing examples of FIG.26A, FIG. 26B, FIG. 27, FIG. 28 and/or FIG. 29), when the wirelessdevice is in transmitting the one or more SP CSI reports on a first BWP(which is an active BWP). The wireless device may switch to the powersaving mode in response to the command. The wireless device, afterswitching to the power saving mode, may maintain the first BWP in activestate. The wireless device, by implementing existing technologies, maykeep transmitting the one or more SP CSI reports in the power savingmode, for example, due to the first BWP being in active state.Transmitting CSI report in a power saving mode may enable the basestation to obtain up-to-date channel quality. Transmitting CSI report ina power saving mode may improve data transmission latency by using theup-to-date channel quality in case the wireless device switches back tothe non-power-saving mode.

In an example, a power saving mode when a wireless device istransmitting CSI report may be similar to or equivalent to a dormantstate of a cell as illustrated above in this specification. The powersaving mode may comprise a time period when the wireless device performsat least one of: not monitoring downlink control channel for a cell, notreceiving downlink data, not transmitting uplink data, and transmittingCSI report for the cell. The dormant state of the cell may comprise atime period when the wireless performs at least one of: not monitoringdownlink control channel for the cell, not receiving downlink data onthe cell, not transmitting uplink data on the cell, and transmitting CSIreport for the cell. In an example, in this specification, a powersaving mode may be referred to as a power saving state, a dormant stateof a cell, a dormancy of a cell, and the like.

In an example, a wireless device may transmit CSI report in a powersaving mode. The wireless device may transmit in a power saving mode,one or more SP CSI reports activated in a full function mode. Thetransmission may increase power consumption of a wireless device, and/oruplink interferences to other wireless devices. In an example, thewireless device may deactivate the SP CSI reporting configuration forthe one or more SP CSI reports in a power saving mode. The wirelessdevice may receive a second command indicating switching form the powersaving mode to a full function mode, after the wireless devicedeactivates the SP CSI reporting configuration. By existingtechnologies, the wireless device may have difficulty in determiningwhether the wireless device shall resume the transmission of the one ormore SP CSI reports automatically, or the wireless device shall wait foranother SP CSI report activation command. Existing technologies mayresult in misalignment between a base station and a wireless deviceregarding SP CSI reports after the wireless device switching from apower saving mode to a full function mode. Misalignment between the basestation and the wireless device may increase uplink interferences toother wireless devices, latency of uplink transmission, powerconsumption of the wireless device, and/or reduce uplink spectrumefficiency. There is a need to improve existing SP CSI reportingmechanism in a power saving mode. Example embodiments, by improvingexisting SP CSI reporting mechanism, may reduce uplink interferences toother wireless devices, latency of uplink transmission, powerconsumption of the wireless device, and/or increase uplink spectrumefficiency.

In an example, a wireless device may transmit CSI report for a cell whenthe cell is in a dormant state. The wireless device may transmit for thecell in the dormant state, one or more SP CSI reports activated in anactive state. The transmission may increase power consumption of awireless device, and/or uplink interferences to other wireless devices.In an example, the wireless device may deactivate the SP CSI reportingconfiguration for the one or more SP CSI reports for the cell inresponse to the cell being in the dormant state. The wireless device mayreceive a second command indicating switching from the dormant state tothe active state, after the wireless device deactivates the SP CSIreporting configuration. By existing technologies, the wireless devicemay have difficulty in determining whether the wireless device shallresume the transmission of the one or more SP CSI reports automatically,or the wireless device shall wait for another SP CSI report activationcommand. Existing technologies may result in misalignment between a basestation and a wireless device regarding SP CSI reports after thewireless device switching a cell from a dormant state to an activestate. Misalignment between the base station and the wireless device mayincrease uplink interferences to other wireless devices, latency ofuplink transmission, power consumption of the wireless device, and/orreduce uplink spectrum efficiency. There is a need to improve existingSP CSI reporting mechanism in a dormant cell. Example embodiments, byimproving existing SP CSI reporting mechanism, may reduce uplinkinterferences to other wireless devices, latency of uplink transmission,power consumption of the wireless device, and/or increase uplinkspectrum efficiency.

FIG. 34 shows an example embodiment of improved SP CSI reportingmechanism in a power saving (PS) mode (or a cell in a dormant state). Inan example, a base station (e.g., gNB in FIG. 34) may transmit to awireless device (e.g., UE in FIG. 34), one or more RRC messagescomprising first configuration parameters of a PS mode and secondconfiguration parameters of CSI reporting. In an example, the firstconfiguration parameters may be configured by implementing one or moreexamples of FIG. 26A, FIG. 26B, FIG. 27, FIG. 28, and/or FIG. 29. In anexample, the PS mode may be implemented by examples of FIG. 26A, FIG.26B, FIG. 27, FIG. 28, and/or FIG. 29. In an example, a PS mode may be atime period when a cell is in a dormant state. In an example, the secondconfiguration parameters may be configured by implementing one or moreexamples of FIG. 31, FIG. 32, and/or FIG. 33. In an example, thewireless device may receive a medium access control control element (MACCE) activating SP CSI reporting on PUCCH for a SP CSI reportingconfiguration. In response to receiving the MAC CE, the wireless devicemay transmit one or more SP CSI reports on a PUCCH resource of an activeBWP, according to one or more parameters of the activated SP CSIreporting configuration.

In an example, the wireless device may receive a 1^(st) command enablinga PS mode on the active BWP, during a time period when the wirelessdevice is in transmitting the one or more SP CSI reports on the PUCCHresource of the active BWP. The 1^(st) command may indicatetransitioning a cell from an active state to a dormant state. As shownin FIG. 34, in response to receiving the 1^(st) command, the wirelessdevice may switch to the PS mode, or transition the cell to a dormantstate. The wireless device may maintain the active BWP (e.g., uplinkBWP) unchanged in response to switching to the PS mode. In an example,in response to switching to the PS mode, the wireless device may suspendthe transmissions of the one or more SP CSI reports for the cell. Thewireless device may keep active the SP CSI reporting configuration. Inan example, keeping active the SP CSI reporting configuration maycomprise maintaining configuration parameters of the SP CSI reportingconfiguration comprising first parameters of one or more CSI-RS resourcesettings, second parameters of one or more CSI reporting settings, andthird parameters of one CSI measurement setting. In an example, thewireless device may stop the transmission of the one or more SP CSIreports, may stop a transmission of aperiodic CSI reports, and/or maykeep transmitting one or more periodic CSI reports, in the PS mode. Inan example, in the PS mode, the wireless device may stop thetransmission of the one or more SP CSI reports, a transmission ofaperiodic CSI reports, and/or transmissions of one or more periodic CSIreports. In an example, when a PS mode comprises a cell being in adormant state, the wireless device may stop transmission of one or moreSP CSI reports for the cell, stop transmission of aperiodic CSI reportsfor the cell, and/or keep transmitting one or more periodic CSI reportsfor the cell. By the embodiment, the wireless device may suspend a SPCSI report (e.g., activated by a SP CSI activation MAC CE) and maintainconfiguration parameters of the SP CSI report in response to the cellbeing in a dormant state. Suspending the SP CSI report in a power savingstate may improve power consumption of a wireless device and/or reduceinterference to other wireless devices. Suspending the SP CSI report ina power saving state may enable the base station to re-allocate uplinkradio resource of the SP CSI report to other wireless devices, thereforeimproving uplink throughput. Maintaining the configuration parameters ofthe SP CSI report in a power saving state may reduce signaling overheadfor re-activation of the SP CSI report when the cell switches from thedormant state to an active state.

In an example, as shown in FIG. 34, the wireless device may receive a2^(nd) command disabling the PS mode on the active BWP. In response toreceiving the 2^(nd) command, the wireless device may switch from the PSmode to a full function mode. In response to switching to the fullfunction mode, the wireless device may resume the transmissions of theone or more SP CSI reports on the PUCCH resource of the active BWP,e.g., without waiting for a new MAC CE for activating the SP CSIreports.

By the example embodiments of FIG. 34, the wireless device may suspendSP CSI reporting on PUCCH in a PS mode and resume the SP CSI reportingon PUCCH when switching from the PS mode to full function mode. Exampleembodiments may reduce power consumption of a wireless device in a PSmode, uplink interferences to other wireless devices, and/or increaseuplink spectrum efficiency. Example embodiments may reduce signalingoverhead for reactivating a SP CSI reporting on PUCCH when switchingfrom a PS mode to a full function mode.

FIG. 35 shows an example embodiment of improved SP CSI reportingmechanism in a power saving (PS) mode. In an example, a base station(e.g., gNB in FIG. 35) may transmit to a wireless device (e.g., UE inFIG. 35), one or more RRC messages comprising first configurationparameters of a PS mode and second configuration parameters of CSIreporting. In an example, the first configuration parameters may beconfigured by implementing one or more examples of FIG. 26A, FIG. 26B,FIG. 27, FIG. 28, and/or FIG. 29. In an example, the PS mode may beimplemented by examples of FIG. 26A, FIG. 26B, FIG. 27, FIG. 28, and/orFIG. 29. In an example, the second configuration parameters may beconfigured by implementing one or more examples of FIG. 31, FIG. 32,and/or FIG. 33. In an example, the wireless device may receive adownlink control information (DCI) activating SP CSI reporting on PUSCHfor a SP CSI reporting configuration. In response to receiving the DCI,the wireless device may transmit one or more SP CSI reports on a PUSCHresource of an active BWP, according to one or more parameters of theactivated SP CSI reporting configuration.

In an example, the wireless device may receive a 1^(st) command enablinga PS mode on the active BWP, during a time period when the wirelessdevice is in transmitting the one or more SP CSI reports on the PUSCHresource of the active BWP. As shown in FIG. 35, in response toreceiving the 1^(st) command, the wireless device may switch to the PSmode. The wireless device may maintain the active BWP unchanged inresponse to switching to the PS mode. In an example, in response toswitching to the PS mode, the wireless device may deactivate the SP CSIreporting configuration for the transmissions of the one or more SP CSIreports on the PUSCH resource of the active BWP. In an example, afterdeactivating the SP CSI reporting configuration, the wireless device maystop the transmission of the one or more SP CSI reports on the PUSCH ofthe active BWP in the PS mode. In an example, when a PS mode comprises acell being in a dormant state, the wireless device may stop transmissionof one or more SP CSI reports for the cell in response to deactivatingthe SP CSI reporting configuration. The wireless device may clearconfiguration parameters of the SP CSI report configuration. Thewireless device, based on the deactivation of the SP CSI reportconfiguration, may not automatically resume the SP CSI reporttransmission. The wireless device may transmit (or resume) the SP CSIreport in response to receiving another DCI indicating an activation ofthe SP CSI report configuration. By the embodiment, the wireless devicemay deactivate (automatically) a SP CSI report (e.g., activated by a SPCSI activation DCI) and clear configuration parameters of the SP CSIreport in response to the cell being in a dormant state. Deactivatingthe SP CSI report in a power saving state may improve power consumptionof a wireless device and/or reduce interference to other wirelessdevices. Deactivating the SP CSI report in a power saving state mayenable the base station to re-allocate uplink radio resource of the SPCSI report to other wireless devices, therefore improving uplinkthroughput. Not automatically resuming the SP CSI report may enable thebase station flexibly activate the SP CSI report by sending a SP CSIactivation DCI when necessary in case the cell switches from the dormantstate to an active state.

In an example, as shown in FIG. 35, the wireless device may receive a2^(nd) command disabling the PS mode on the active BWP. In response toreceiving the 2^(nd) command, the wireless device may switch from the PSmode to a full function mode. In response to switching to the fullfunction mode, the wireless device may not resume the transmissions ofthe one or more SP CSI reports on the PUSCH resource of the active BWPbefore receiving a (re-) activation command for the transmissions of theone or more SP CSI reports. In an example, as shown in FIG. 35, thewireless device may transmit the one or more SP CSI reports on the PUSCHresource of the active BWP in response to receiving a 2^(nd) DCIactivating the SP CSI reporting on PUSCH.

By the example embodiments of FIG. 35, the wireless device maydeactivate SP CSI reporting on PUSCH in a PS mode. The wireless devicemay not resume the SP CSI reporting on PUSCH when switching from the PSmode to full function mode, until the wireless device receives anactivation command for the SP CSI reporting on PUSCH. Exampleembodiments may reduce power consumption of a wireless device in a PSmode, uplink interferences to other wireless devices, and/or increaseuplink spectrum efficiency. Example embodiments may enable the basestation to flexibly control a wireless device regarding a SP CSIreporting on PUSCH when switching from a PS mode to a full functionmode.

FIG. 36 shows an example of improved CSI-RS selection/determinationmechanism in a PS mode. In an example, a base station (e.g., gNB in FIG.36) may transmit to a wireless device (e.g., UE in FIG. 36), one or moreRRC messages comprising first configuration parameters of a PS mode andsecond configuration parameters of CSI-RSs. In an example, the firstconfiguration parameters may be implemented by one or more examples ofFIG. 26A, FIG. 26B, FIG. 27, FIG. 28, and/or FIG. 29. In an example, thePS mode may be implemented by examples of FIG. 26A, FIG. 26B, FIG. 27,FIG. 28, and/or FIG. 29. The second configuration parameters may beimplemented by one or more examples of FIG. 30 and/or FIG. 31. In anexample, the wireless device may receive a MAC CE activating one or moreCSI-RS resource set from the CSI-RSs on an active BWP. The one or moreCSI-RS resource set may comprise one or more SP CSI-RS resources, or oneor more SP CSI-IM (Interference Measurement) resources. The one or moreCSI-RS resource set may comprise one or more SP zero-power (ZP) CSI-RSresources. In response to receiving the MAC CE, the wireless device mayassume that the one or more CSI-RS resource sets are transmitted by thebase station after receiving the MAC CE. The wireless device maycalculate (or measure) one or more CSI/IM based on the activated one ormore CSI-RS resource sets. The wireless device may transmit via aPUCCH/PUSCH resource of an active BWP, the one or more CSI/IM reportsbased on the measurement of the one or more CSI/IM.

In an example, as shown in FIG. 36, the wireless device may receive a1^(st) command enabling a PS mode on the active BWP, during a timeperiod when the wireless device is in measuring the CSI/IM on the one ormore CSI-RS resource sets. In response to receiving the 1^(st) command,the wireless device may switch to the PS mode. The wireless device mayassume that the one or more CSI-RS resource sets are not transmitted bythe base station when the wireless device switches to the PS mode. Thewireless device may stop measuring on the one or more CSI-RS resourcesets in the PS mode. In an example, the wireless device may receive a2^(nd) command disabling the PS mode on the active BWP. In response toreceiving the 2^(nd) command, the wireless device may switch from the PSmode to a full function mode. The wireless device, in response toreceiving the 2^(nd) command, may assume that the one or more CSI-RSresource sets are transmitted by the base station after the wirelessdevice switch from the PS mode to the full function mode. The wirelessdevice may resume measuring CSI/IM on the one or more CSI-RS resourcesets.

By the example embodiments of FIG. 36, in a PS mode, the wireless devicemay stop CSI/IM measurement on CSI-RS resource sets which is activatedby a MAC CE in full function mode. The wireless device may resumemeasuring the CSI/IM on the CSI-RS resource sets when switching from thePS mode to full function mode. Example embodiments may reduce powerconsumption of a wireless device in a PS mode, uplink interferences toother wireless devices, and/or increase uplink spectrum efficiency.Example embodiments may reduce signaling overhead when switching from aPS mode to a full function mode.

In an example, a base station may indicate a wireless device transmitone or more SRS for channel quality estimation (e.g., CSI acquisition,or uplink beam management) to enable frequency-selective scheduling onthe uplink. Transmission of SRS may be used for other purposes, such asto enhance power control or to support various startup functions for thewireless device not recently scheduled. Some examples in which SRStransmission is useful comprise initial MCS (Modulation and CodingScheme) selection, initial power control for data transmissions, timingadvance, and frequency semi-selective scheduling.

In an example, a base station may indicate a wireless device to transmitat least one of three types of SRS: periodic SRS transmission (type 0);aperiodic SRS transmission (type 1); semi-persistent SRS transmission.For the periodic SRS transmission, subframes in which SRSs may betransmitted may be indicated by cell-specific broadcast signaling,and/or UE-specific signaling.

FIG. 37A shows an example of periodic SRS transmission. Periodicity ofthe periodic SRS transmission may be a value from as often as once every2 ms to as infrequently as once every 160 ms. A wireless device maytransmit SRSs in SC-FDMA or OFDM symbols (e.g., last 1-3 symbols in asubframe) in the configured subframes.

FIG. 37B shows an example of aperiodic SRS transmission. A wirelessdevice may transmit SRS aperiodically in response to receiving a DCIindicating the aperiodic SRS transmission.

FIG. 37C shows an example of SP SRS transmission. In an example, awireless device may receive configuration parameters of SP SRStransmission. The configuration parameters may comprise at least one of:a periodicity of the SP SRS transmission; a time/frequency radioresource; cyclic shift parameters; and/or other radio parameters (e.g.,bandwidth, frequency hopping, transmission comb and offset,frequency-domain position). The wireless device may transmit the SP SRSin response to receiving a first MAC CE activating the SP SRS. Thewireless device may repeat the SP SRS transmission with the periodicityuntil receiving a second MAC CE deactivating the SP SRS. The wirelessdevice may deactivate the SP SRS and stop the SP SRS transmission inresponse to receiving the second MAC CE deactivating the SP SRS.

In existing technologies, a wireless device may transmit one or more SPSRSs on a first BWP, in response to the one or more SP SRSs beingactivated by a MAC CE and the first BWP being in active state, e.g., asshown in FIG. 37C. The wireless device may suspend the transmission ofthe one or more SP SRSs in response to switching from the first BWP to asecond BWP as an active BWP. In an example, in response to switching tothe first BWP as the active BWP, the wireless device may resume thetransmission of the one or more SP SRSs before the wireless devicereceives a MAC CE deactivating the one or more SP SRSs. In an example,the wireless device may receive a command indicating switching to apower saving mode (e.g., by implementing examples of FIG. 26A, FIG. 26B,FIG. 27, FIG. 28 and/or FIG. 29), when the wireless device is intransmitting the one or more SP SRSs on a first BWP (which is an activeBWP). The wireless device may switch to the power saving mode inresponse to the command. The wireless device, after switching to thepower saving mode, may maintain the first BWP in active state. Thewireless device, by implementing existing technologies, may keeptransmitting the one or more SP SRSs even in the power saving mode, forexample, due to the first BWP being in active state. Transmitting in apower saving mode, the one or more SP SRSs activated in a full functionmode, may increase power consumption of a wireless device, and/or uplinkinterferences to other wireless devices. In an example, the wirelessdevice may deactivate the one or more SP SRSs in a power saving mode.The wireless device may receive a second command indicating switchingform the power saving mode to a full function mode, after the wirelessdevice deactivates the one or more SP SRSs. By existing technologies,the wireless device may have difficulty in determining whether thewireless device shall resume the transmission of the one or more SP SRSsautomatically, or the wireless device shall wait for another SP SRSactivation command. Existing technologies may result in misalignmentbetween a base station and a wireless device regarding SP SRStransmission after the wireless device switching from a power savingmode to a full function mode. Misalignment between the base station andthe wireless device may increase uplink interferences to other wirelessdevices, latency of uplink transmission, power consumption of thewireless device, and/or reduce uplink spectrum efficiency. There is aneed to improve existing SP SRS transmission mechanism in a power savingmode. Example embodiments, by improving existing SP SRS transmissionmechanism, may reduce uplink interferences to other wireless devices,latency of uplink transmission, power consumption of the wirelessdevice, and/or increase uplink spectrum efficiency.

FIG. 38 shows an example embodiment of improved SP SRS transmissionmechanism in a PS mode. In an example, a base station (e.g., gNB in FIG.38) may transmit to a wireless device (e.g., UE in FIG. 38), one or moreRRC messages comprising first configuration parameters of a PS mode andsecond configuration parameters of SRS. In an example, the firstconfiguration parameters may be configured by implementing one or moreexamples of FIG. 26A, FIG. 26B, FIG. 27, FIG. 28, and/or FIG. 29. In anexample, the PS mode may be implemented by examples of FIG. 26A, FIG.26B, FIG. 27, FIG. 28, and/or FIG. 29. In an example, the secondconfiguration parameters may be configured by implementing one or moreexamples of FIG. 37A, FIG. 37B and/or FIG. 37C. In an example, thewireless device may receive a MAC CE activating SP SRS transmission. Inresponse to receiving the MAC CE, the wireless device may transmit theSP SRS on an active BWP.

In an example, the wireless device may receive a 1^(st) command enablinga PS mode on the active BWP, during a time period when the wirelessdevice is in transmitting the SP SRS on the active BWP. As shown in FIG.38, in response to receiving the 1^(st) command, the wireless device mayswitch to the PS mode. The wireless device may maintain the active BWPunchanged in response to switching to the PS mode. In an example, inresponse to switching to the PS mode, the wireless device may suspendthe transmissions of the SP SRS on the active BWP. The wireless devicemay keep active the SP SRS. In an example, the wireless device may stopthe transmission of the SP SRS, may stop a transmission of aperiodicSRS, and/or may keep transmitting one or more periodic SRSs, in the PSmode. In an example, in the PS mode, the wireless device may stop thetransmission of the SP SRS, a transmission of aperiodic SRS, and/ortransmissions of one or more periodic SRSs.

In an example, as shown in FIG. 38, the wireless device may receive a2^(nd) command disabling the PS mode on the active BWP. In response toreceiving the 2^(nd) command, the wireless device may switch from the PSmode to a full function mode. In response to switching to the fullfunction mode, the wireless device may resume the transmissions of theSP SRS on the active BWP.

By the example embodiments of FIG. 38, the wireless device may suspendSP SRS transmission in a PS mode and resume the SP SRS transmission whenswitching from the PS mode to full function mode. Example embodimentsmay reduce power consumption of a wireless device in a PS mode, uplinkinterferences to other wireless devices, and/or increase uplink spectrumefficiency. Example embodiments may reduce signaling overhead forreactivating a SP SRS transmission when switching from a PS mode to afull function mode.

In an example, a wireless device may transmit one or more uplinktransport blocks (TBs) via radio resources of a cell based on aconfigured grant. The configured grant may comprise a first type ofconfigured grant (e.g., Type 1), a second type of configured grant(e.g., Type 2), and/or the like. The wireless device may transmit one ormore TBs via radio resources of a cell based on configuration parametersof a configured grant Type 1, when the wireless device receives RRCmessages comprising the configuration parameters of the configured grantType 1. The configuration parameters may comprise at least one of: afrequency hopping indication, one or more DMRS configuration parameters,an MCS table indication parameter, a resource allocation typeindication, one or more power control parameters (e.g., P0, alpha,and/or power control loop indicator), a transmission repetition number,a transmission periodicity indicator, a time domain offset value, a timedomain resource allocation parameter, a frequency domain resourceallocation parameter, a number for antenna ports, a SRS resourceindicator, and the like. The wireless device may transmit one or moreTBs periodically via radio resources of the cell based on configurationparameters of a configured grant Type 1, e.g., without waiting for atransmission request (e.g., a DCI or a MAC CE) from a base station.

In an example, when the configured grant is a Type 2 configured grant, awireless device may receive first configuration parameters of theconfigured grant in RRC messages, and second configuration parameters ofthe configured grant in a DCI indicating an activation of the configuredgrant. In an example, when the configured grant is a Type 2 configuredgrant, the wireless device may receive RRC messages comprising firstconfiguration parameters of the configured grant Type 2, the firstconfiguration parameters comprising at least one of: a frequency hoppingindication, one or more DMRS configuration parameters, an MCS tableindication parameter, a resource allocation type indication, one or morepower control parameters (e.g., P0, alpha, and/or power control loopindicator), repetition number, and/or a transmission periodicityindicator. The wireless device may receive a DCI (e.g., with CRCscrambled by a CS-RNTI) indicating an activation of the configuredgrant. The DCI may further indicate second configuration parameters ofthe configured grant, the second configuration parameters comprising atleast one of: a time domain offset value, a time domain resourceallocation parameter, a frequency domain resource allocation parameter,a number for antenna ports, a SRS resource indicator, and the like. Inan example, based on the first configuration parameters of theconfigured grant Type 2 and second configuration parameters of theconfigured grant Type 2, the wireless device may transmit one or moreTBs via radio resources of the cell. In response to receiving the DCIactivating the configured grant, the wireless device may transmit one ormore TB s periodically via radio resources of the cell based onconfiguration parameters of a configured grant Type 2. The wirelessdevice may stop the transmission in response to receiving a second DCIindicating a deactivation of the configured grant Type 2.

In an example, a wireless device may suspend a configured uplink Type 1on a first BWP of a cell in response to an active BWP switching from thefirst BWP to a second BWP of the cell. The wireless device may clear aconfigured uplink Type 2 on a first BWP of a cell in response to anactive BWP switching from the first BWP to a second BWP of the cell. Inan example, a wireless device may deactivate a cell in response to anexpiry of a SCell deactivation timer associated with the cell and/orreceiving a MAC CE indicating a deactivation of the cell. In response todeactivating the cell, the wireless device may clear a configured uplinkType 2 and/or suspend a configured uplink Type 1.

In an example, a power saving mode, based on example embodiments of FIG.26A, FIG. 26B, FIG. 27, FIG. 28 and/or FIG. 29, and comprisingtransmitting CSI report, may be similar to or equivalent to a dormantstate of a cell as illustrated above in this specification. The powersaving mode may comprise a time period when the wireless device performsat least one of: not monitoring downlink control channel for a cell, notreceiving downlink data, not transmitting uplink data, and transmittingCSI report for the cell. The dormant state of the cell may comprise atime period when the wireless performs at least one of: not monitoringdownlink control channel for the cell, not receiving downlink data onthe cell, not transmitting uplink data on the cell, and transmitting CSIreport for the cell. In an example, in this specification, a powersaving mode may be referred to as a power saving state, a dormant stateof a cell, a dormancy of a cell, and the like.

In an example, a wireless device may receive a DCI, via a PDCCH,indicating a power saving operation. The power saving operation may bebased on at least one of: a wake-up/go-to-sleep indication (e.g., awake-up or go-to-sleep indication as shown in FIG. 26A or FIG. 26B), apower saving enabling/disabling indication (e.g., FIG. 27), a PDCCHmonitoring adaptation based on a PDCCH monitoring adaption indicationDCI (e.g., FIG. 28), a dynamic DRX configured based on a DCI (e.g., FIG.29), and the like. The power saving operation may not involve an activedownlink BWP switching or an active uplink BWP switching. The powersaving operation may comprise a dormant state for a cell. The dormantstate of the cell is different from a deactivated state of the cell asillustrated above in this specification. In an example, a wirelessdevice keeps running an SCell deactivation timer of a cell in a dormantstate. However, a wireless device does not keep running the SCelldeactivation timer of the cell in the deactivated state. In an example,a wireless device transmits CSI report for a cell in the dormant state.However, the wireless device does not transmit CSI report for the cellin the deactivated state.

In existing technologies, a wireless device may receive one or more MACCEs (e.g., examples of FIG. 20A, FIG. 20B, FIG. 21A, FIG. 21B, and/orFIG. 21C) indicating a deactivation of an SCell or a transitioning of anSCell to a dormant state. Implementation of existing technologies usingMAC CE(s) for transitioning an SCell to dormant state may result inincreased signaling overhead of a base station and/or increasedprocessing complexity of a wireless device. The wireless deviceprocessing MAC CE(s) for dormancy indication, may result in extraprocessing time and increasing power consumption. Using MAC CE(s) forSCell deactivation may be sufficient since the deactivation of the SCellis not urgent in some cases. However, existing technologies, byswitching the SCell to a dormant state based on MAC CE(s), may not meetthe requirement for dynamic power adaptation on a SCell. In an example,channel quality and/or traffic pattern may change frequently in a celldeployed on high frequencies (e.g., 6 GHz, 30 GHz, and the like). Thewireless device may spend more power in high frequency than in lowfrequency, for communication with a base station. Power adaption,considering frequently changed channel qualities and traffic patterns,may require a wireless device to quickly process dormancy indications,and react promptly upon receiving the dormancy indications. Existing MACCE based dormancy indication may not enable the wireless device toquickly adapt power consumption on a cell. Existing MAC CE baseddormancy indication may not enable the wireless device to quicklytransition the cell to a dormant state for reducing power consumptionand maintaining CSI report. Existing MAC CE based dormancy indicationmay not enable the wireless device to quickly transition the cell from adormant state to an active state for resuming transmission on the cell.Example embodiments implement enhanced methods for transitioning anSCell to a dormant state. A base station, by implementing exampleembodiments, may transmit a DCI indicating transitioning an SCell to adormant state. Example embodiments implement enhanced processes forconfigured grant Type 1 when a wireless device receives a DCI indicatingtransitioning an SCell to a dormant state. Example embodiments enablequick processes of configured grant Type 1, when a DCI indicating aSCell dormancy state is implemented by a base station and/or a wirelessdevice.

In an example, a wireless device may be in process of uplinktransmission via a configured grant (e.g., a configured uplink grantType 1) when the wireless device receives a DCI indicating a powersaving operation (or a SCell dormancy). The wireless device, in responseto receiving the DCI, may stop uplink transmissions via the configuredgrant. The wireless device, in response to receiving the DCI, may keepunchanged an active BWP (e.g., a downlink BWP and/or an uplink BWP) ofthe cell. The wireless device, in response to receiving the DCI, maymaintain an active state of an SCell and keep running an SCelldeactivation timer associated with the SCell. The wireless device, basedon the SCell deactivation timer being running, may consider the SCell isin an active state (or not in a deactivated state). The wireless device,in response to receiving the DCI indicating transitioning an active cellto a dormancy, may transition the active cell to the dormancy, which maybe referred to as the active cell with the dormancy. The wireless devicemay transmit CSI report for the active cell with the dormancy. Thewireless device, based on transmitting CSI report for the cell with thedormancy, may consider the cell is in an active state (or not in adeactivated state). By implementing existing technologies, the basestation and/or the wireless device may maintain the radio resources ofconfigured grant Type 1 for the wireless device. The wireless deviceand/or the base station, by implementing existing technologies, maymaintain/reserve the radio resources after the wireless device receivesthe DCI indicating switching to the power saving state.Maintaining/reserving the radio resources may prevent other wirelessdevices to transmit TBs via the radio resources. This may result inreduced spectral efficiency and throughput in a wireless network.

In an example, a configured grant may be a configured grant Type 1. Abase station may transmit to a wireless device one or more RRC messagescomprising configuration parameters of the configured grant Type 1. Theconfiguration parameters may comprise at least one of: a frequencyhopping indication, one or more DMRS configuration parameters, an MCStable indication parameter, a resource allocation type indication, oneor more power control parameters (e.g., P0, alpha, and/or power controlloop indicator), a transmission repetition number, a transmissionperiodicity indicator, a time domain offset value, a time domainresource allocation parameter, a frequency domain resource allocationparameter, a number for antenna ports, a SRS resource indicator, and thelike. The wireless device, after stopping uplink transmission based onswitching to the power saving state, may maintain/reserve radioresources indicated by the configuration parameters of the configuredgrant Type 1. A wireless device and/or a base station, by implementingexisting technologies, maintaining/reserving the radio resources mayprevent other wireless devices to utilize the radio resources. This mayresult in reduced system throughput. In some existing technologies, thewireless device may release configuration parameters of a configuredgrant Type 1 in response to an SCell transitioning to a dormant ordeactivated state. This may increase a need for downlink signalingoverhead for reconfiguring the configured grant Type 1 and may increaseprocessing delay in re-activation of configured grant Type 1. In anexample, a base station may reserve the radio resources for the wirelessdevice. The wireless device, without knowledge of whether the basestation reserves the radio resource, may release the configurationparameters of the configured grant Type 1, or vice versa. In this case,misalignment between the base station and the wireless device may occur.Misalignment between the base station and the wireless device regardingthe configured grant Type 1 in a power saving state may increase powerconsumption of the wireless device, signaling overhead of a basestation, and/or reduce system throughput.

There is a need to enhance signaling for transitioning an SCell to adormant state and to improve configured grant processing to reducesignaling overhead and improve system throughput in a power savingoperation. Example embodiments may improve power consumption of awireless device, reduce signaling overhead of a base station, reduceuplink interference to other wireless devices, and/or improve uplinkthroughput.

In an example, one of example embodiments may comprise receiving a DCIindicating a transition to a power saving state (e.g., transitioning acell to a dormant state) and suspending a configured grant Type 1 inresponse to transitioning to the power saving state based on the DCI.Suspending the configured grant Type 1 may comprise maintainingconfiguration parameters, of the configured grant Type 1, indicated byone or more RRC messages configuring the configured grant Type 1.Maintaining configuration parameters of the configured grant Type 1 mayenable the wireless device quickly re-initialize the configured grantType 1 and/or resume uplink transmission via the configured grant Type 1when the wireless device receives another DCI indicating switching to anon-power-saving state from the power saving state (e.g., transitioningthe cell from the dormant state to the active state). Maintainingconfiguration parameters of the configured grant Type 1 may reducesignaling overhead (e.g., RRC messages) for reconfiguring the configuredgrant Type 1. Maintaining the configuration parameters of the configuredgrant Type 1 and stopping transmission via radio resources of theconfigured grant Type 1 from the wireless device may enable the basestation to re-allocate the radio resources to other wireless devices,therefore improving system throughput for the wireless network.

In an example, one of the example embodiments may comprise receiving aDCI indicating switching from the power saving state to anon-power-saving state (e.g., transitioning an SCell from a dormantstate to an active state), (re-)initializing the configured grant Type1, and automatically resuming a transmission via the configured grantType 1 in response to switching to the non-power-saving state (e.g.,transitioning the SCell to the active state) based on the DCI. Byautomatically resuming the configured grant Type 1, the wireless devicemay transmit uplink TBs via the configured grant Type 1 when thewireless device switches from the power saving state to thenon-power-saving state. Example embodiments may improve downlinksignaling overhead for activation of the configured grant Type 1 for thepower saving state. Example embodiments may improve spectral efficientand throughput in the wireless network.

FIG. 39 shows an example embodiment of PUSCH transmission on theconfigurated grant in a PS mode. In an example, a base station (e.g.,gNB in FIG. 39) may transmit to a wireless device (e.g., UE in FIG. 39),one or more RRC messages comprising first configuration parameters of aPS mode and second configuration parameters of configured grant (CG).The CG may be a CG Type 1. In an example, the first configurationparameters may be configured by implementing one or more examples ofFIG. 26A, FIG. 26B, FIG. 27, FIG. 28, and/or FIG. 29. In an example, thePS mode may be implemented by examples of FIG. 26A, FIG. 26B, FIG. 27,FIG. 28, and/or FIG. 29. The PS mode may comprise a cell being in adormant state. In an example, the second configuration parameters of theCG Type 1 may comprise: a frequency hopping indicator; a DMRSconfiguration; an MCS table; a resource allocation type indicator; anRBG size; one or more power control parameters; a repetition number; aRV pattern sequence; one or more time domain allocation parameters;and/or one or more frequency domain allocation parameters. In anexample, the wireless device may receive a SCell activation/deactivationMAC CE (e.g., one or more examples of FIG. 20A and/or FIG. 20B)indicating an activation of the cell. The wireless device may activatethe cell based on the SCell activation/deactivation MAC CE. Based on thesecond configuration parameters, the wireless device may transmit uplinktransport blocks (TBs) via the CG Type 1 on an active BWP of the cell,when the cell is in the activated state (the active state, ornon-dormant state, or a non-dormancy).

In an example, the wireless device may receive a 1^(st) command enablinga PS mode (e.g., transitioning the cell to a dormant state or adormancy) on the active BWP, during a time period when the wirelessdevice is in transmitting the uplink TBs via the CG Type 1 on the activeBWP of the activated cell. The 1^(st) command may be a DCI indicatingthe power saving mode, addressed to the wireless device, or addressed toa group of wireless devices comprising the wireless device. The 1^(st)command may be a DCI indicating transitioning the cell to a dormancy. Asshown in FIG. 39, in response to receiving the 1^(st) command, thewireless device may switch to the PS mode. The wireless device maytransition the cell to the dormancy in response to receiving the 1^(st)command. The wireless device may maintain the active BWP (e.g., anactive uplink BWP) unchanged in response to switching to the PS mode. Inan example, in response to switching to the PS mode, the wireless devicemay suspend the CG Type 1 on the active BWP. In an example, thesuspending the CG Type 1 on the active BWP of the cell may comprisemaintaining (or not releasing) the second configuration parameters ofthe CG Type 1 configured by the one or more RRC messages. In an example,the wireless device may stop the transmission of the uplink TBs via theCG Type 1 of the active BWP. Based on the embodiments, by suspending aconfigured grant Type 1 and maintaining configuration parameters of theconfigured grant Type 1 in a power saving mode (or on an active cellwith dormancy), a wireless device may quickly re-initialize theconfigured grant Type 1 and/or resume uplink transmission via theconfigured grant Type 1 when the wireless device receives another DCIindicating switching to a non-power-saving state from the power savingstate (e.g., transitioning the cell to the active state). Maintainingconfiguration parameters of the configured grant Type 1 may reducesignaling overhead (e.g., RRC messages) for reconfiguring the configuredgrant Type 1.

In an example, as shown in FIG. 39, the wireless device may receive a2^(nd) command (e.g., a DCI) disabling the PS mode on the active BWP. Inresponse to receiving the 2^(nd) command, the wireless device may switchfrom the PS mode to a full function mode. In response to receiving the2^(nd) command, the wireless device may transition the cell withdormancy to a non-dormant state (e.g., an active state). In response totransitioning the cell to a non-dormant state, the wireless device mayreinitialize the CG Type 1 on the active BWP of the cell. In response totransitioning the cell to a non-dormant state, the wireless device mayresume the transmissions of the uplink TBs via the CG Type 1 on theactive BWP, based on reinitializing the CG Type 1 on the active BWP ofthe cell.

By the example embodiments of FIG. 39, the wireless device may suspendUL transmission on a CG (e.g., Type 1) in a PS mode and resume the ULtransmission on the CG when switching from the PS mode to full functionmode. Example embodiments may reduce power consumption of a wirelessdevice in a PS mode, uplink interferences to other wireless devices,and/or increase uplink spectrum efficiency. Example embodiments mayreduce signaling overhead for reconfiguring a CG when switching from aPS mode to a full function mode.

In existing technologies, a wireless device may receive one or more MACCEs (e.g., examples of FIG. 20A, FIG. 20B, FIG. 21A, FIG. 21B, and/orFIG. 21C) indicating a deactivation of an SCell or a transitioning of anSCell to a dormant state. Implementation of existing technologies usingMAC CE(s) for transitioning an SCell to dormant state may result inincreased signaling overhead of a base station and/or processingcomplexity of a wireless device. The wireless device processing MACCE(s) for dormancy indication, may result in extra processing time andincreasing power consumption. Using MAC CE(s) for SCell deactivation maybe sufficient when the deactivation of the SCell is not urgent. However,existing technologies, by switching the SCell to a dormant state basedon MAC CE(s), may not meet the requirement for dynamic power adaptationon a SCell. In an example, channel quality and/or traffic pattern maychange frequently in a cell deployed on high frequencies (e.g., 6 GHz,30 GHz, and the like). Power adaption, considering frequently changedchannel qualities and traffic patterns, may require a wireless device toquickly process dormancy indications, and react promptly upon receivingthe dormancy indications. Existing MAC CE based dormancy indication maynot enable the wireless device to quickly adapt power consumption on acell. Existing MAC CE based dormancy indication may not enable thewireless device to quickly transition the cell to a dormant state forreducing power consumption and maintaining CSI report. Existing MAC CEbased dormancy indication may not enable the wireless device to quicklytransition the cell from a dormant state to an active state for resumingtransmission on the cell. Example embodiments implement enhanced methodsfor transitioning an SCell to a dormant state. A base station, byimplementing example embodiments, may transmit a DCI indicatingtransitioning an SCell to a dormant state. Example embodiments implementenhanced processes for configured grant Type 2 when a wireless devicereceives a DCI indicating transitioning an SCell to a dormant state.Example embodiments enable quick processes of configured grant Type 2,when a DCI indicating a SCell dormancy state is implemented by a basestation and/or a wireless device.

In an example, a wireless device may be in process of uplinktransmission via a configured grant (e.g., a configured uplink grantType 2) when the wireless device receives a DCI indicating a powersaving operation (or a SCell dormancy). The wireless device, in responseto receiving the DCI, may stop uplink transmissions via the configuredgrant. The wireless device, in response to receiving the DCI, may keepunchanged an active BWP (e.g., a downlink BWP and/or an uplink BWP) ofthe cell. The wireless device, in response to receiving the DCI, maymaintain an active state of an SCell and keep running an SCelldeactivation timer associated with the SCell. The wireless device, basedon the SCell deactivation timer being running, may consider the SCell isin an active state (or not in a deactivated state). The wireless device,in response to receiving the DCI indicating transitioning an active cellto a dormancy, may transition the active cell to the dormancy, which maybe referred to as the active cell with the dormancy. The wireless devicemay transmit CSI report for the active cell with the dormancy. Thewireless device, based on transmitting CSI report for the cell with thedormancy, may consider the cell is in an active state (or not in adeactivated state). By implementing existing technologies, the basestation and/or the wireless device may maintain the radio resources ofconfigured grant Type 2 for the wireless device. The wireless deviceand/or the base station, by implementing existing technologies, maymaintain/reserve the radio resources after the wireless device receivesthe DCI indicating switching to the power saving state.Maintaining/reserving the radio resources may prevent other wirelessdevices to transmit TBs via the radio resources. This may result inreducing spectral efficiency and throughput in a wireless network.

In an example, a configured grant may be a configured grant Type 2. Aconfigured grant Type 2 may be associated with first configurationparameters indicated by RRC messages and second configuration parametersindicated by a configured grant activation DCI. The first configurationparameters comprise at least one of: a frequency hopping indication, oneor more DMRS configuration parameters, an MCS table indicationparameter, a resource allocation type indication, one or more powercontrol parameters (e.g., P0, alpha, and/or power control loopindicator), repetition number, and/or a transmission periodicityindicator. The second configuration parameters may comprise at least oneof: a time domain offset value, a time domain resource allocationparameter, a frequency domain resource allocation parameter, a numberfor antenna ports, an SRS resource indicator, and the like. The wirelessdevice, after stopping uplink transmission based on switching to thepower saving state, may maintain/reserve radio resources indicated bythe first configuration parameters (e.g., in the RRC messages) and/orthe second configuration parameters (e.g., in the DCI) of the configuredgrant Type 2. A wireless device and/or a base station, by implementingexisting technologies, maintaining/reserving the radio resources mayprevent other wireless devices to utilize the radio resources. This mayresult in reduced system throughput. In some existing technologies, thewireless device may release the first configuration parameters of aconfigured grant Type 2 in response to an SCell transitioning to adormant or deactivated state. This may increase a need for downlinksignaling overhead for reconfiguring the configured grant Type 2 and mayincrease processing delay in re-activation of configured grant Type 2.In an example, a base station may reserve the radio resources for thewireless device. The wireless device, without knowledge of whether thebase station reserves the radio resource, may release the configurationparameters of the configured grant Type 2, or vice versa. In this case,misalignment between the base station and the wireless device may occur.Misalignment between the base station and the wireless device regardingthe configured grant Type 2 in a power saving state may increase powerconsumption of the wireless device, signaling overhead of a basestation, and/or reduce system throughput.

There is a need to enhance signaling for transitioning an SCell to adormant state and to improve configured grant processing to reducesignaling overhead and improve system throughput in a power savingoperation. Example embodiments may improve power consumption of awireless device, reduce signaling overhead of a base station, reduceuplink interference to other wireless devices, and/or improve uplinkthroughput.

In an example, one of example embodiments may comprise receiving a DCIindicating a transitioning to a power saving state (e.g., transitioninga cell to a dormant state) and maintaining first configurationparameters of a configured grant Type 2 and clearing secondconfiguration parameters of the configured grant Type 2 in response totransitioning to the power saving state (e.g., transitioning the cell tothe dormant state) based on the DCI. The first configuration parametersmay be indicated in one or more RRC messages configuring the configuredgrant Type 2. The second configuration parameters may be indicated in aconfigured grant activation DCI. Clearing the second configurationparameters of the configured grant Type 2, in the power saving state,may improve uplink throughput, e.g., by enabling the base station tore-allocate uplink radio resource of the configured grant Type 2 toother wireless devices. Maintaining the first configuration parametersof the configured grant Type 2, in the power saving state, may improvedownlink signaling overhead, e.g., by avoiding transmitting from thebase station one or more RRC messages for reconfiguring the firstconfiguration parameters of the configured grant Type 2. Maintaining thefirst configuration parameters and clearing the second configurationparameters may enable the base station and the wireless device toachieve a trade-off between downlink signaling overhead and uplinkthroughput.

In an example, one of the example embodiments may comprise receiving aDCI indicating switching from a power saving state to a non-power-savingstate (e.g., transitioning a cell from a dormant state to an active ornon-dormant state) and not automatically resuming a transmission via theconfigured grant Type 2 in response to switching to the non-power-savingstate (e.g., transitioning the cell to the non-dormant state) based onthe DCI. By not automatically resuming the configured grant Type 2, thewireless device, may activate the configured grant Type 2 in response toreceiving another DCI indicating an activation of the configured grantType 2 when the wireless device switches from the power saving state tothe non-power-saving state. Example embodiment may enable the wirelessdevice not to resume automatically the configured grant Type 2 for powersaving and/or interference reduction. Example embodiment may enable thebase station to activate the configured grant Type 2 conveniently bytransmitting a DCI indicating an activation of the configured grant Type2. Transmitting the DCI may be convenient for activation of theconfigured grant Type 2, compared with transmitting one or more RRCmessages.

FIG. 40 shows an example embodiment of PUSCH transmission on theconfigurated grant in the PS mode. In an example, a base station (gNB inFIG. 40) may transmit to a wireless device (UE in FIG. 40), one or moreRRC messages comprising first configuration parameters of a PS mode andsecond configuration parameters of configured grant (CG). The CG may bea CG Type 2. In an example, the first configuration parameters may beconfigured by implementing one or more examples of FIG. 26A, FIG. 26B,FIG. 27, FIG. 28, and/or FIG. 29. In an example, the PS mode may beimplemented by examples of FIG. 26A, FIG. 26B, FIG. 27, FIG. 28, and/orFIG. 29. In an example, the second configuration parameters of the CGType 2 may comprise: a frequency hopping indicator; a DM-RSconfiguration; an MCS table; a resource allocation type indicator; anRBG size; one or more power control parameters; a repetition number;and/or a RV pattern sequence. In an example, the wireless device mayreceive a SCell activation/deactivation MAC CE (e.g., one or moreexamples of FIG. 20A and/or FIG. 20B) indicating an activation of thecell. The wireless device may activate the cell based on the SCellactivation/deactivation MAC CE. In an example, the wireless device mayreceive a 1^(st) DCI activating the CG Type 2 on an active BWP. The1^(st) DCI may be addressed to a RNTI (e.g., CS-RNTI) dedicated foruplink transmission via configured grant. The 1^(st) DCI may furthercomprise third configuration parameters of the CG Type 2 comprising atleast one of: one or more time domain radio resource allocationparameters; one or more frequency domain radio resource allocationparameters; and/or one or more MIMO parameters. Based on the secondconfiguration parameters and the third configuration parameters of theCG Type 2, the wireless device may transmit uplink TB s via the CG Type2 on an active BWP of the cell.

In an example, a wireless device may receive a 1^(st) command enabling aPS mode on an active BWP of a cell, during a time period when thewireless device is in transmitting the uplink TBs via a CG Type 2 on theactive BWP of the cell. The 1^(st) command may be a DCI indicating thepower saving mode, addressed to the wireless device, or addressed to agroup of wireless devices comprising the wireless device. The 1^(st)command may be a DCI indicating transitioning the cell to a dormancy. Asshown in FIG. 40, in response to receiving the 1^(st) command, thewireless device may switch to the PS mode. The wireless device maytransition the cell to the dormancy in response to receiving the 1^(st)command. The wireless device may maintain the active BWP unchanged inresponse to switching to the PS mode. In an example, in response toswitching to the PS mode, the wireless device may clear the CG Type 2(e.g., one or more configuration parameters of the CG Type 2) on theactive BWP. In an example, the wireless device may stop the transmissionof the uplink TBs via the CG of the active BWP. Clearing the CG Type 2may comprise clearing the third configuration parameters, of the CG Type2, indicated by the DCI for activation of the CG Type 2. Clearing the CGType 2 may comprise maintaining (or not releasing) the secondconfiguration parameters, of the CG Type 2, indicated by the one or moreRRC messages.

In an example, as shown in FIG. 40, the wireless device may receive a2^(nd) command (e.g., a DCI) disabling the PS mode on the active BWP. Inresponse to receiving the 2^(nd) command, the wireless device may switchfrom the PS mode to a full function mode. In response to switching tothe full function mode, the wireless device may not automatically resumethe transmissions of the uplink TBs via the CG on the active BWP, untilreceiving a 2^(nd) DCI activating the CG on the active BWP.

By the example embodiments of FIG. 40, the wireless device may clear aCG (e.g., Type 2) in a PS mode and may not automatically resume the ULtransmission on the CG when switching from the PS mode to full functionmode. Example embodiments may reduce power consumption of a wirelessdevice in a PS mode, uplink interferences to other wireless devices,and/or increase uplink spectrum efficiency. Example embodiments mayenable a base station to flexibly control uplink transmission via a CGwhen switching from a PS mode to a full function mode.

In an example, one or more embodiments of FIG. 34 may be applied toimprove PDCCH beam determination in a PS mode. FIG. 41 shows an exampleembodiment of improved PDCCH beam determination in the PS mode. In anexample, a base station (e.g., gNB in FIG. 41) may transmit to awireless device (e.g., UE in FIG. 41), one or more RRC messagescomprising first configuration parameters of a PS mode and secondconfiguration parameters of transmission configuration indicator (TCI)states. In an example, the first configuration parameters may beconfigured by implementing one or more examples of FIG. 26A, FIG. 26B,FIG. 27, FIG. 28, and/or FIG. 29. In an example, the PS mode may beimplemented by examples of FIG. 26A, FIG. 26B, FIG. 27, FIG. 28, and/orFIG. 29. In an example, the second configuration parameters of the TCIstates may comprise one or more QCL parameters of one or more QCL typesfor each TCI state. Each TCI state may be identified by a TCI ID. Theone or more QCL types may comprise a QCL Type 1 and a QCL Type 2. Theone or more QCL parameters of a QCL type may comprise: a cell ID; a BWPID; a CSI-RS resource index or an SSB index; and/or a QCL type indicatorindicating one of type A, type B, type C and type D.

In an example, the wireless device may receive a MAC CE activating a TCIstate from the TCI states. In response to receiving the MAC CE, thewireless device may monitor a PDCCH according to the activated TCIstate. In an example, the wireless device may attempt to decode a DCI onthe PDCCH based on an assumption that DM-RS antenna port for the PDCCHreception is QCLed with a CSI-RS or an SSB indicated in the TCI state.

In an example, as shown in FIG. 41, the wireless device may receive a1^(st) command enabling a PS mode on the active BWP, during a timeperiod when the wireless device is in monitoring the PDCCH according tothe activated TCI state on the active BWP. As shown in FIG. 41, inresponse to receiving the 1^(st) command, the wireless device may switchto the PS mode. The wireless device may maintain the active BWPunchanged in response to switching to the PS mode. In an example, inresponse to switching to the PS mode, the wireless device may stopmonitoring the PDCCH according to the activated TCI state on the activeBWP. In an example, in response to switching to the PS mode, thewireless device may start monitoring the PDCCH according to a new TCIstate (e.g., different from the TCI state activated by the MAC CE) onthe active BWP. In an example, the wireless device may determine the newTCI state as same as the TCI state for PDCCH receptions in a CORESETconfigured by one or more configuration parameters (e.g.,pdcch-ConfigSIB1) in a high layer message (e.g., MIB). In an example,the UE may determine the new TCI state such that the wireless device mayassume that DM-RS antenna port associated with PDCCH receptions in thePS mode is QCLed with SS/PBCH block the wireless device identifiedduring the initial access procedure or with SS/PBCH block the wirelessdevice identified during a non-contention random access procedure,whichever is latest. In an example, the wireless device may determinethe new TCI state as a TCI state dedicatedly configured by an RRCmessage for PDCCH monitoring in the PS mode.

In an example, as shown in FIG. 41, the wireless device may receive a2^(nd) command disabling the PS mode on the active BWP. In response toreceiving the 2^(nd) command, the wireless device may switch from the PSmode to a full function mode. In response to switching to the fullfunction mode, the wireless device may resume the monitoring the PDCCHaccording to the activated TCI state on the active BWP, e.g., beforereceiving a new MAC CE for activating a new TCI state.

By the example embodiments of FIG. 41, in a PS mode, the wireless devicemay stop monitoring PDCCH with a TCI state activated in a full functionmode and resume monitoring the PDCCH with the TCI state when switchingfrom the PS mode to full function mode. Example embodiments may reducepower consumption of a wireless device in a PS mode, uplinkinterferences to other wireless devices, and/or increase uplink spectrumefficiency. Example embodiments may improve PDCCH monitoring and/orreduce signaling overhead for reactivating a TCI state for PDCCHmonitoring when switching from a PS mode to a full function mode.

Similarly, example embodiments of FIG. 34 may be applied to improvePUCCH beam determination in a PS mode. FIG. 42 shows an exampleembodiment of improved PUCCH beam determination in the PS mode. In anexample, a base station (e.g., gNB in FIG. 42) may transmit to awireless device (e.g., UE in FIG. 42), one or more RRC messagescomprising first configuration parameters of a PS mode and secondparameters of PUCCH spatial relation information configurations. In anexample, the first configuration parameters may be configured byimplementing one or more examples of FIG. 26A, FIG. 26B, FIG. 27, FIG.28, and/or FIG. 29. In an example, the PS mode may be implemented byexamples of FIG. 26A, FIG. 26B, FIG. 27, FIG. 28, and/or FIG. 29. In anexample, each PUCCH spatial relation information configuration of thePUCCH spatial relation information configurations may be identified by aPUCCH spatial relation information configuration ID. The secondconfiguration parameters of each PUCCH spatial relation informationconfiguration may comprise: a cell ID; one of a CSI-RS resource index,SSB index and an SRS resource index; and/or one or more power controlparameters.

In an example, the wireless device may receive a MAC CE activating a1^(st) PUCCH spatial relation information configuration from the PUCCHspatial relation information configurations. Based on the MAC CE, thewireless device may transmit one or more uplink control information(e.g., HARQ ACK/NACK, SR and/or CSI reports) via a PUCCH according tothe activated 1^(st) PUCCH spatial relation information configuration.In an example, the wireless device may transmit the one or more uplinkcontrol information via the PUCCH using a same spatial domain filter asfor a reception of an SSB identified by an SSB index in the activated1^(st) PUCCH spatial relation information configuration. In an example,the wireless device may transmit the one or more uplink controlinformation via the PUCCH using a same spatial domain filter as for areception of a CSI-RS identified by a CSI-RS resource index in theactivated 1^(st) PUCCH spatial relation information configuration. In anexample, the wireless device may transmit the one or more uplink controlinformation via the PUCCH using a same spatial domain filter as for atransmission of an SRS identified by an SRS resource index in theactivated 1^(st) PUCCH spatial relation information configuration.

In an example, as shown in FIG. 42, the wireless device may receive a1^(st) command enabling a PS mode on the active BWP, during a timeperiod when the wireless device is in transmitting the PUCCH accordingto the activated 1^(st) PUCCH spatial relation informationconfiguration. As shown in FIG. 42, in response to receiving the 1^(st)command, the wireless device may switch to the PS mode. The wirelessdevice may maintain the active BWP unchanged in response to switching tothe PS mode. In an example, in response to switching to the PS mode, thewireless device may stop transmitting the PUCCH according to theactivated 1^(st) PUCCH spatial relation information configuration.

In an example, as shown in FIG. 42, the wireless device may receive a2^(nd) command disabling the PS mode on the active BWP. In response toreceiving the 2^(nd) command, the wireless device may switch from the PSmode to a full function mode. In response to switching to the fullfunction mode, the wireless device may resume the transmission of thePUCCH according to a 2^(nd) PUCCH spatial relation informationconfiguration, before receiving a new MAC CE for activating a new PUCCHspatial relation information configuration. In an example, the wirelessdevice may determine the 2^(nd) PUCCH spatial relation informationconfiguration based on one or more RSs for PDCCH monitoring in the PSmode.

In an example, in response to switching to the full function mode, thewireless device may resume the transmission of the PUCCH according tothe 1^(st) PUCCH spatial relation information configuration, beforereceiving a new MAC CE for activating a new PUCCH spatial relationinformation configuration.

By the example embodiments of FIG. 42, in a PS mode, the wireless devicemay stop transmitting PUCCH based on a spatial relation informationconfiguration activated in a full function mode and resume thetransmission of the PUCCH based on the spatial relation informationconfiguration when switching from the PS mode to full function mode.Example embodiments may reduce power consumption of a wireless device ina PS mode, uplink interferences to other wireless devices, and/orincrease uplink spectrum efficiency. Example embodiments may reducesignaling overhead for reactivating a PUCCH spatial relation informationconfiguration for PUCCH transmission when switching from a PS mode to afull function mode.

In an example, a wireless device may receive a medium access controlcontrol element activating a semi-persistent channel state information(SP CSI) reporting on PUCCH. The wireless device may transmit a SP CSIreport via a PUCCH resource for the SP CSI reporting, in response toreceiving the medium access control control element. The wireless devicemay receive a first command indicating switching to a power saving mode.The wireless device may suspend the transmitting the SP CSI report viathe PUCCH resource, in response to receiving the first command. In anexample, the wireless device may receive a second command indicatingswitching from the power saving mode. In response to the second command,the wireless device may resume the transmitting the SP CSI report viathe PUCCH resource.

In an example, a wireless device may receive a first downlink controlinformation (DCI) activating a SP CSI reporting on PUSCH. The wirelessdevice may transmit a SP CSI report via a PUSCH resource for the SP CSIreporting, in response to receiving the first DCI. The wireless devicemay receive a second DCI indicating switching to a power saving mode.The wireless device may deactivating the SP CSI reporting on PUSCH, inresponse to receiving the second DCI. In an example, the wireless devicemay receive a third DCI indicating switching from the power saving modeand activating the SP CSI reporting on PUSCH. In response to receivingthe third DCI, the wireless device may transmit the SP CSI report viathe PUSCH resource.

In an example, a wireless device may receive a MAC CE activatingtransmission of a SP SRS. The wireless device may transmit the SP SRS,in response to the MAC CE. In an example, the wireless device mayreceive a first DCI indicating switching to a power saving mode. Thewireless device may suspend the transmitting the SP SRS, in response toreceiving the first DCI. In an example, the wireless device may receivea second DCI indicating switching from the power saving mode. Thewireless device, in response to the second DCI, may resume thetransmitting the SP SRS.

FIG. 43 shows an example flow chart of transmission via a CG Type 2 in apower saving state as per an aspect of an example embodiment of thepresent disclosure. At 4310, a wireless device (e.g., a UE) receivesconfiguration parameters of a CG Type 2 associated with a cell. Theconfiguration parameters are comprised in one or more RRC messages. At4320, the wireless device receives a first DCI indicating an activationof the CG Type 2. At 4330, the wireless device transmits uplink TBsbased on the configuration parameters of the CG Type 2. At 4340, thewireless device transitions the cell to a dormancy in response toreceiving a second DCI. The second DCI indicates transitioning the cellto the dormancy. At 4350, the wireless device, in response to thetransitioning the cell to the dormancy, clears the CG Type 2 associatedwith the cell, and maintains the configuration parameters of the CG Type2.

According to an example embodiment, the wireless device stops, inresponse to the clearing the CG Type 2, the transmitting the TBs viaradio resources of the CG Type 2 of the cell.

According to an example embodiment, the second DCI does not indicate adeactivation of the CG Type 2.

According to an example embodiment, the configuration parameters, of theCG Type 2, comprise at least one of: a frequency hopping indicator, oneor more demodulation reference signal configuration parameters, atransmission periodicity indication, and/or one or more power controlparameters.

According to an example embodiment, the dormancy of the cell comprises atime period when a cell deactivation timer, associated with the cell, isrunning.

According to an example embodiment, the dormancy of the cell comprises atime period when the wireless device performs at least one of: stoppingmonitoring one or more downlink control channels on an active downlinkbandwidth part of the cell, stopping transmitting one or more uplinkchannels on an active uplink bandwidth part of the cell, and/ortransmitting channel state information report for the cell.

According to an example embodiment, the first DCI is received withcyclic redundancy check bits, of the first DCI, scrambled by aconfigured scheduling radio network temporary identifier (CS-RNTI).

According to an example embodiment, the second DCI is received withcyclic redundancy check bits, of the second DCI, scrambled by a powersaving radio network temporary identifier (PS-RNTI).

According to an example embodiment, the second DCI is received withcyclic redundancy check bits, of the second DCI, scrambled by a cellradio network temporary identifier (C-RNTI) identifying the wirelessdevice.

According to an example embodiment, the second DCI comprises a groupcommon DCI addressed to a group of wireless devices comprising thewireless device.

According to an example embodiment, the wireless device activates afirst downlink bandwidth part (BWP), of a plurality of downlink BWPs ofthe cell, as an active downlink BWP of the cell.

According to an example embodiment, the wireless device receives a thirdDCI indicating transitioning the cell to a non-dormancy, and a fourthDCI indicating an activation of the CG Type 2. The wireless deviceactivates the CG Type 2 based on the third DCI and the fourth DCI. Thewireless device transmits uplink TBs via radio resources of the CG Type2 based on the activating the CG Type 2.

According to an example embodiment, the non-dormancy of the cellcomprises a time period when the wireless device performs at least oneof: monitoring one or more downlink control channels on an activedownlink bandwidth part of the cell, transmitting one or more uplinkchannels on an active uplink bandwidth part of the cell, andtransmitting channel state information report for the cell.

According to an example embodiment, the wireless device receives amedium access control control element, MAC CE, indicating an activationof the cell. The wireless device transitions the cell to the activestate based on the MACE CE indicating the activation of the cell.

According to an example embodiment, the wireless device does not switch,in response to the transitioning the cell to the dormancy, from a firstuplink BWP to a second uplink BWP as an active uplink BWP of the cell,wherein the cell comprises at least the first uplink BWP and the seconduplink BWP. The configuration parameters indicate that the CG Type 2 isconfigured on a first uplink bandwidth part of the cell.

According to an example embodiment, the first DCI further indicatesuplink grant parameters, of the configured uplink grant Type 2,comprising: a time domain offset for the CG Type 2, a starting symbolfor the CG Type 2, a length indicator indicating a number of symbols forthe CG Type 2, and/or one or more resource blocks for the CG Type 2. Theclearing the configured uplink grant Type 2 comprises clearing theuplink grant parameters of the configured uplink grant Type 2.

FIG. 44 shows an example flow chart of transmission via a CG Type 2 in apower saving state as per an aspect of an example embodiment of thepresent disclosure. At 4410, a base station transmits, to a wirelessdevice, configuration parameters of a CG Type 2 associated with a cell.The configuration parameters are comprised in one or more RRC messages.At 4420, the base station transmits a first DCI indicating an activationof the CG Type 2 for the wireless device. At 4430, the base stationreceives, from the wireless device, uplink TBs based on theconfiguration parameters of the CG Type 2. At 4440, the base stationtransmits a second DCI indicating transitioning the cell to a dormancyfor the wireless device. The base station transitions the cell to thedormancy based on the second DCI for the wireless device. At 4450, thebase station, in response to the transitioning the cell to the dormancyfor the wireless device, clears the CG Type 2 associated with the cellfor the wireless device, and maintains the configuration parameters ofthe CG Type 2 for the wireless device.

FIG. 45 shows an example flow chart of uplink transmissions via a CGType 1 in a power saving state as per an aspect of an example embodimentof the present disclosure. At 4510, a wireless device (e.g., a UE)receives one or more RRC messages comprising configuration parameters ofa CG Type 1 associated with a cell. At 4520, the wireless devicetransmits uplink TBs based on the configuration parameters of the CGType 1. At 4530, the wireless device receives a first DCI indicatingtransitioning the cell to a dormancy. The wireless device transitionsthe cell to the dormancy based on the first DCI. At 4540, the wirelessdevice, in response to the first DCI indicating the transitioning thecell to the dormancy, suspends the CG Type 1 associated with the cell.The wireless device stops uplink transmission via radio resources of theCG Type 1, based on the suspending the CG Type 1.

According to an example embodiment, the wireless device maintains theconfiguration parameters of the CG Type 1 in response to thetransitioning the cell to the dormancy.

According to an example embodiment, the wireless device re-initializesthe suspended CG Type 1 associated with the cell in response toreceiving a second DCI indicating transitioning the cell from thedormant state to the active state. The wireless device, based on there-initializing the suspended CG Type 1, transmits one or more uplinkTBs via radio resources of the CG Type 1.

FIG. 46 shows an example flow chart of transmission via a CG Type 1 in apower saving state as per an aspect of an example embodiment of thepresent disclosure. At 4610, a base station transmits, to a wirelessdevice, one or more RRC messages comprising configuration parameters ofa CG Type 1 associated with a cell. At 4620, the base station receives,from the wireless device, uplink TBs based on the configurationparameters of the CG Type 1. At 4630, the base station transmits a firstDCI indicating transitioning the cell to a dormancy for the wirelessdevice. The base station transitions the cell to the dormancy for thewireless device. At 4640, the base station suspends, in response to thetransitioning the cell to the dormancy, the CG Type 1 associated withthe cell for the wireless device.

In New Radio (NR) Release 15 the basic support for URLLC was introducedwith TTI structures for low latency as well as methods for improvedreliability. Tighter URLLC requirements require enhancing the Release 15features. Example use cases for improved URLLC use cases include AR/VR(Entertainment industry), Factory automation, Transport Industry,including the remote driving use case, Electrical Power Distribution,etc. Example tighter URLLC requirements include higher reliability (upto 1E-6 level), higher availability, short latency in the order of 0.5to 1 ms, depending on the use cases (factory automation, transportindustry and Electrical power distribution). Example features thatrequire enhancement for enhanced URLLC include PDCCH enhancements (e.g.,Compact DCI, PDCCH repetition, increased PDCCH monitoring capability),UCI enhancements (Enhanced HARQ feedback methods (increased number ofHARQ transmission possibilities within a slot), CSI feedbackenhancements, PUSCH enhancements (e.g., mini-slot level hopping &retransmission/repetition enhancements), scheduling/HARQ/CSI processingtimeline (wireless device and base station), enhanced multiplexingconsidering different latency and reliability requirements (e.g., ULinter UE Tx prioritization/multiplexing), enhanced UL configured grant(grant free) transmissions, with study focusing on improved configuredgrant operation (e.g., explicit HARQ-ACK, ensuring K repetitions andmini-slot repetitions within a slot), etc.

The legacy CSI reporting mechanisms depend on DRX procedures. The legacyprocesses may lead to a wireless device not transmitting an aperiodicCSI report even if the base station triggers the wireless device totransmit the aperiodic CSI via PUCCH. This leads to inefficientscheduling and degraded network performance. There is a need to enhancethe legacy processes for CSI reporting and DRX. Example embodimentsenhance the legacy CSI reporting and DRX processes.

In an example embodiment as shown in FIG. 47, a wireless device mayreceive one or more messages comprising configuration parameters. Theone or more messages may comprise one or more RRC messages. The one ormore messages may comprise configuration parameters of one or morecells. In an example, the one or ore cells may comprise a primary cell.In an example, the one or more cells may comprise a primary cell and oneor more secondary cells. In an example, the primary cell may beconfigured with one or more uplink control channel. In an example, oneor more first secondary cells of the one or more cells may be configuredwith one or more uplink control channels. In an example, the one or moreuplink control channels may comprise one or more first short uplinkcontrol channels. In an example, a short uplink control channel may havea duration shorter than a long uplink control channel. In an example, aduration of a short uplink control channel may be one or more symbols.In an example, a duration of a short uplink control channel may be oneor more symbols and may be shorter than a slot duration. In an example,a short uplink control channel may be employed to transmit CSI report ofone or more CSI types among a plurality of CSI types (e.g., periodic,aperiodic, semi-persistent, etc.).

The configuration parameters may comprise channel state information(CSI) configuration parameters. In an example, the configurationparameters may comprise channel state information (CSI) configurationparameters of a first CSI type. In an example as shown in FIG. 49 andFIG. 53, the first CSI type may comprise a periodic CSI type. In anexample, CSI resources for transmission of a periodic CSI report may bebased on the periodic CSI configuration parameters. The wireless devicemay transmit the periodic CSI reports via the configured CSI resourceson a cell configured with PUCCH (e.g., primary cell or PUCCH secondarycell) in response to receiving the periodic CSI configuration parametersand the cell being active. The cell may be active in response toreceiving a cell activation MAC CE indicating activation of the cell.The wireless device may report the periodic CSI report via an uplinkcontrol channel in response to no transport block being transmitted bythe wireless device at the time the periodic CSI report is to betransmitted. The wireless device may transmit periodic CSI reports basedon measuring CSI reference signals configured for determining theperiodic CSI reports. The CSI configuration parameters (e.g., theperiodic CSI configuration parameters) may indicate the reference signalresources and the wireless device may determine the CSI report of thefirst CSI type (e.g., periodic CSI report) based on measuring the CSIreference signals.

In an example, the configuration parameters may comprise aperiodic CSIconfiguration parameters. In an example, the aperiodic CSI configurationparameters may comprise second configuration parameters of second CSIreference signals. The wireless device may create an aperiodic CSIreport based on measuring the second CSI reference signals.

In an example as shown in FIG. 50 and FIG. 54, the first CSI type maycomprise a semi-persistent CSI type. In an example, the wireless mayreceive a MAC CE indicating activation of semi-persistent CSI reportingvia physical uplink control channel. The wireless device may determinetransmission of the CSI report, of the first type, based on thereceiving the MAC CE. In an example, the CSI resources for transmissionof CSI resources of the first CSI type (e.g., semi-persistent CSI) maybe based on semi-persistent CSI configuration parameters and the MAC CEindicating activation of the semi-persistent CSI reporting. The MAC CEmay indicate activation of physical uplink control channel resourcesconfigured for semi-persistent CSI reports. The CSI configurationparameters (e.g., the semi-persistent CSI configuration parameters) mayindicate the reference signal resources and the wireless device maydetermine the CSI report of the first CSI type (e.g., semi-persistentCSI report) based on measuring the CSI reference signals.

The configuration of the CSI of the first CSI type may be fortransmission of the CSI reports of the first type via an uplink controlchannel (e.g., PUCCH). The CSI configuration parameters may indicateresources that base station uses for transmission of one or more typesof CSI reference signals. The wireless device may measure the referencesignals based on the configuration parameters of the CSI referencesignals. The wireless device may create CSI reports (e.g., of the firstCSI type) based on CSI reference signal measurements.

The configuration parameters may comprise a first CSI mask parameter.The CSI mask parameter configuration parameter may be a Booleanparameter taking one of values TRUE or FALSE. The CSI mask parameter maybe configured with the value TRUE. The CSI transmission (e.g., periodicCSI, aperiodic CSI, semi-persistent CSI, etc.) via physical uplinkcontrol channel and/or physical uplink shared channel at a first timemay be based on whether the CSI mask parameter is configured and/orbased on a DRX state that the wireless device is at the first time(e.g., whether the wireless device is in Active time or not Active timeat the first time) and/or based on whether one or more DRX timers arerunning at the first time.

The configuration parameters may comprise discontinuous reception (DRX)configuration parameters. The DRX configuration parameters may compriseone or more timer values for one or more timers. The wireless device mayperform the DRX procedure based on the DRX configuration parameters. Thewireless device may monitor a control channel for an RNTI based on theDRX procedures. The one or more DRX timers may comprise a first timer.In an example, the first timer may be a DRX on duration timer.

The wireless device may receive a downlink control informationindicating transmission of an aperiodic CSI (e.g., via an uplink controlchannel). In an example, the downlink control information may be adownlink scheduling DCI indicating parameters (e.g., radio resources,HARQ related information, PUCCH power control, etc.) for reception of atransport block via PDSCH. In an example, the downlink controlinformation may be a group-common DCI. The group common DCI may compriseaperiodic CSI trigger for one or more wireless devices. The group commonDCI may comprise a plurality of fields for a plurality of wirelessdevices wherein a position of a field corresponding to a wireless devicemay be based on a position parameter/index configured for the wireless.The wireless device may receive the position parameter/index via the oneor more messages comprising the configuration parameters. The wirelessdevice may determine a position of a field, corresponding to thewireless device, in the group common downlink control information basedon the position parameter/index. In an example, a value of the field mayindicate whether the corresponding wireless device is configured withaperiodic CSI transmission. In an example, the field may comprise onebit. A value of one may indicate that the corresponding wireless deviceis triggered for transmission of aperiodic CSI (e.g., on PUCCH) and avalue of zero may indicate that the corresponding wireless device is nottriggered for transmission of aperiodic CSI (e.g., on PUCCH)

The downlink control information may indicate transmission of theaperiodic CSI at a first time. The first time may indicate aslot/mini-slot/subframe/PUCCH duration that the aperiodic CSI isscheduled for transmission via the uplink control channel. In anexample, the downlink control information may comprise a first fieldindicating the first time. In an example, the downlink controlinformation may comprise a second field indicating PDSCH-to-HARQfeedback timing (e.g., a timing for transmission of the HARQ feedbackfor the transport block received via the PDSCH scheduled by the downlinkcontrol information). In an example, the timing for transmission of theaperiodic CSI via PUCCH (e.g., slot/mini-slot/PUCCH duration) may bebased on the timing indicated by the second field for transmission ofthe HARQ feedback. In an example, timing for transmission of theaperiodic CSI via PUCCH (e.g., slot/mini-slot/PUCCH duration) may bebased on a value of the second field. In an example, timing fortransmission of the aperiodic CSI via PUCCH (e.g., slot/mini-slot/PUCCHduration) may be based on a value of the second field and one or moreconfiguration parameters. In an example, the value of the second fieldmay provide an index to one of a plurality of configured valuesindicated by the configuration parameters. In an example, the value ofthe second field may provide a first index to one of a plurality ofconfigured values for determining HARQ feedback and may provide a secondindex for determining one of a plurality of configured values fordetermining transmission timing of the aperiodic CSI. In an example, thedownlink control information may comprise the first field for indicatingthe timing (e.g., slot/mini-slot/PUCCH duration) for transmission of theaperiodic CSI and the second field for indicating HARQ feedback timing(e.g., PDSCH-to-HARQ feedback timing).

In an example, the first time may be based on a numerology of abandwidth part that the downlink control information is received. In anexample, the first time may be based on a numerology of a bandwidth partthat the aperiodic CSI is transmitted. The numerology of a bandwidthpart may indicate a subcarrier spacing of the bandwidth part. Thesubcarrier spacing may indicate a symbol duration/slot durationcorresponding to the bandwidth part. In an example, the first time maybe based on a first number of the symbol durations/slot durations. In anexample, the first time may be the first number of slot durations/symboldurations in response to receiving a downlink channel (e.g., PDCCH orPDSCH).

The wireless device may determine transmission of a CSI report, of thefirst CSI type, via the uplink control channel at a second time. Thesecond time may indicate a slot/mini-slot/PUCCH for transmission of theSCI report of the first CSI type. In an example, the determination maybe based on the CSI configuration parameters and/or reception of one ormore commands/messages. In an example, the second time may be based onthe CSI configuration parameters (e.g., a configured periodicity and/oroffset, etc.) and one or more parameters indicated by the one or morecommands/messages.

In an example embodiment, the wireless device may determine, based onthe DRX configuration parameters and/or the DRX procedure that the firsttimer is not running at the first time and the second time. In anexample, the determining that the first timer is not running is based ona DRX cycle parameter and a DRX offset parameter. The DRX configurationparameters may comprise the DRX cycle parameter and the DRX offsetparameter.

The wireless device may, in response to the determining that the firsttimer is not running at the first time, report the aperiodic CSI reportvia the uplink control channel at the first time. The wireless may, inresponse to the determining that the first timer is not running at thesecond time, not report the CSI report, of the first type, via theuplink control channel at the second time.

In an example embodiment as shown in FIG. 51, the wireless device maydetermine, based on the DRX configuration parameters and/or the DRXprocedure that the wireless device is not in a DRX Active time at thefirst time and the second time. In an example, the determining that thewireless device is not in an Active time at the first time and thesecond time may be based on at least one of one or more timers (e.g.,drx-onDurationTimer or drx-InactivityTimer or drx-RetransmissionTimerDLor drx-RetransmissionTimerUL or ra-ContentionResolutionTimer) notrunning at the first time and the second time and/or a schedulingrequest not being pending and/or a PDCCH indicating a new transmissionaddressed to the C-RNTI of the MAC entity being received aftersuccessful reception of a Random Access Response for the Random AccessPreamble not selected by the MAC entity among the contention-basedRandom Access Preamble.

The wireless device may, in response to the determining that thewireless device is not in an Active time at the first time, report theaperiodic CSI report via the uplink control channel at the first time.The wireless may, in response to the determining that the wirelessdevice is not in an Active time at the second time, not report the CSIreport, of the first type, via the uplink control channel at the secondtime.

In an example embodiment, a wireless device may receive configurationparameters comprising: channel state information (CSI) configurationparameters of a first CSI type; a first CSI mask parameter; anddiscontinuous reception (DRX) configuration parameters comprising afirst value for a first timer. The wireless device may receive adownlink control information indicating transmission of an aperiodic CSIreport via an uplink control channel at a first time. The wirelessdevice may determine transmission of a CSI report, of the first CSItype, via the uplink control channel at a second time. The wirelessdevice may determine, based on the DRX configuration parameters, thatthe first timer is not running at; the first time; and the second time.The wireless device may report the aperiodic CSI report via the uplinkcontrol channel at the first time. The wireless device may not reportthe CSI report, of the first type, via the uplink control channel at thesecond time.

In an example embodiment as shown in FIG. 48, a wireless device mayreceive configuration parameters comprising: a first CSI mask parameter;and discontinuous reception (DRX) configuration parameters comprising afirst value for a first timer. The wireless device may receive adownlink control information indicating transmission of an aperiodic CSIreport via an uplink control channel at a first time. The wirelessdevice may determine, based on the DRX configuration parameters, thatthe first timer is not running at the first time. The wireless devicemay report the aperiodic CSI report via the uplink control channel atthe first time.

In an example embodiment, a wireless device may receive configurationparameters comprising: channel state information (CSI) configurationparameters of a first CSI type; a first CSI mask parameter; anddiscontinuous reception (DRX) configuration parameters comprising afirst value for a first timer. The wireless device may receive adownlink control information indicating transmission of an aperiodic CSIreport via an uplink control channel at a first time. The wireless deicemay determine transmission of a CSI report, of the first CSI type, viathe uplink control channel at a second time. The wireless device maydetermine based on the DRX configuration parameters, that the firsttimer is not running at the second time. The wireless device may reportthe aperiodic CSI report via the uplink control channel at the firsttime regardless of whether the first timer is running at the first time.The wireless device may not report the CSI report, of the first type,via the uplink control channel at the second time.

In an example, embodiment, a wireless device may receive configurationparameters comprising: a first CSI mask parameter; and discontinuousreception (DRX) configuration parameters comprising a first value for afirst timer. The wireless device may receive receiving a downlinkcontrol information indicating transmission of an aperiodic CSI reportvia an uplink control channel at a first time. The wireless device mayreport the aperiodic CSI report via the uplink control channel at thefirst time regardless of whether the first timer is running at the firsttime.

In an example embodiment, a wireless device may receive configurationparameters comprising: channel state information (CSI) configurationparameters of a first CSI type; and discontinuous reception (DRX)configuration parameters. The wireless device may receive a downlinkcontrol information indicating transmission of an aperiodic CSI reportvia an uplink control channel at a first time. The wireless device maydetermine transmission of a CSI report, of the first CSI type, via theuplink control channel at a second time. The wireless device maydetermine, based on the DRX configuration parameters, that the wirelessdevice is not in an Active Time at: the first time; and the second time.The wireless device may report the aperiodic CSI report via the uplinkcontrol channel at the first time. The wireless device may not reportthe CSI report, of the first type, via the uplink control channel at thesecond time.

In an example embodiment as shown in FIG. 52, the wireless device mayreceive configuration parameters comprising discontinuous reception(DRX) configuration parameters. The wireless device may receive adownlink control information indicating transmission of an aperiodic CSIreport via an uplink control channel at a first time. The wirelessdevice may determine, based on the DRX configuration parameters, thatthe wireless device is not in an Active Time at the first time. Thewireless device may report the aperiodic CSI report via the uplinkcontrol channel at the first time.

In an example embodiment, a wireless device may configuration parameterscomprising: channel state information (CSI) configuration parameters ofa first CSI type; and discontinuous reception (DRX) configurationparameters. The wireless device may receive a downlink controlinformation indicating transmission of an aperiodic CSI report via anuplink control channel at a first time. The wireless device maydetermine transmission of a CSI report, of the first CSI type, via theuplink control channel at a second time. The wireless device maydetermine, based on the DRX configuration parameters, that the wirelessdevice is not in an Active Time at the second time. The wireless devicemay report the aperiodic CSI report via the uplink control channel atthe first time regardless of whether the wireless device is in an Activetime at the first time. The wireless device may not report the CSIreport, of the first type, via the uplink control channel at the secondtime.

In an example embodiment, a wireless device may, configurationparameters comprising discontinuous reception (DRX) configurationparameters. The wireless device may receive a downlink controlinformation indicating transmission of an aperiodic CSI report via anuplink control channel at a first time. The wireless device may reportthe aperiodic CSI report via the uplink control channel at the firsttime regardless of whether the wireless device is in a DRX Active timeat the first time.

In an example embodiment as shown in FIG. 55, a wireless device mayreceive one or more messages comprising configuration parameters. Theconfiguration parameters may comprise aperiodic CSI configurationparameters (e.g., for aperiodic CSI reports on an uplink controlchannel). The aperiodic CSI configuration parameters may comprise one ormore information elements indicating a list of aperiodic trigger states.In an example, a trigger state in the list of trigger states mayindicate reference signals for aperiodic CSI measurement and/orreporting parameters. In an example, an aperiodic trigger state in thelist of the aperiodic trigger states may indicate radio resources (e.g.,PUCCH resources) and uplink control channel type (e.g., short, long,etc.) for transmission of the aperiodic CSI report. In an example, radioresources and/or uplink control channel type may be determined based onthe parameters of the aperiodic trigger state and/or a DCItriggering/scheduling the aperiodic CSI report on PUCCH. In an example,the DCI triggering/scheduling the aperiodic CSI report on PUCCH mayindicate a parameter in a plurality of parameters wherein the radioresources for transmission of the aperiodic CSI report is based on theparameter. In an example, the DCI triggering/scheduling the aperiodicCSI report on PUCCH may comprise a field, a value of the field mayindicate an index to a parameter in a plurality of parameters whereinthe radio resources for transmission of the aperiodic CSI report isbased on the parameter.

In an example, the wireless device may receive a MAC CE indicating oneor more first aperiodic trigger states (e.g., a subset) of the list ofthe trigger states. In an example, the MAC CE may comprise a pluralityof fields. A first field in the plurality of fields may correspond to afirst aperiodic trigger state in the list of the trigger states. A valueof the first field may indicate whether the first aperiodic triggerstate is selected or not. In an example, a value of ‘1’ of the firstfield may indicate that the first aperiodic trigger state is selectedand a value of ‘0’ may indicate that the first trigger state is notselected.

The wireless device may receive a DCI scheduling/triggering theaperiodic CSI on PUCCH. In an example, the DCI may be a wireless devicespecific DCI. In an example, the DCI may be a downlink scheduling DCI.The DCI may indicate parameters for reception of a transport block andmay indicate/trigger the aperiodic CSI on PUCCH. In an example, the DCImay be a group common DCI triggering/scheduling aperiodic CSI on PUCCHfor one or more wireless devices.

In an example embodiment as shown in FIG. 56, a wireless device mayreceive one or more messages comprising configuration parameters. Theconfiguration parameters may comprise aperiodic CSI configurationparameters (e.g., for aperiodic CSI reports on an uplink controlchannel). The wireless device may receive a downlink control informationindicating transmission of an aperiodic CSI report via an uplink controlchannel. The wireless device may transmit the aperiodic CSI report viathe uplink control channel.

In an example, the wireless device may receive an acknowledgement inresponse to the transmitting the aperiodic CSI report. In an example,the acknowledgement to an aperiodic CSI on PUCCH may be a MAC CE. Thewireless device may receive a MAC PDU via a PDSCH. In an example, thepayload of the MAC CE may indicate a positive or a negativeacknowledgement. In an example, the MAC CE may have no corresponding SDUin the MAC PDU and may be identified by the wireless device based on anLCID of the MAC CE. The LCID of the MAC CE may be indicated in a MACheader of the MAC PDU. The wireless device may determine a positiveacknowledgement in response to receiving the MAC CE. In an example, thewireless device may determine a negative acknowledgement in response tonot receiving the MAC CE. In an example, the wireless device maydetermine a negative acknowledgement in response to not receiving theMAC CE within a time period. In an example, the wireless device maystart a timer in response to transmitting the aperiodic CSI. Thewireless device may determine a negative acknowledge in response to thetimer expiring and not receiving the MAC CE. The wireless device mayreceive configuration parameters comprising a value of the timer.

In an example, the wireless device may determine an implicitacknowledgement based on receiving a downlink scheduling DCI. In anexample, the wireless device may determine an implicit acknowledgementbased on receiving a downlink scheduling DCI within a time window aftertransmission of the aperiodic CSI on PUCCH. In an example, the wirelessdevice may start a timer in response to transmitting aperiodic CSI onPUCCH. The wireless device may determine negative acknowledgement inresponse to the timer expiring and not receiving a downlink schedulingDCI.

In an example, the wireless device may retransmit the aperiodic CSI inresponse to receiving a negative acknowledgement (e.g., explicit orimplicit). The wireless device may retransmit the aperiodic CSI based onparameters used for initial transmission (e.g., PUCCH).

Embodiments may be configured to operate as needed. The disclosedmechanism may be performed when certain criteria are met, for example,in a wireless device, a base station, a radio environment, a network, acombination of the above, and/or the like. Example criteria may bebased, at least in part, on for example, wireless device or network nodeconfigurations, traffic load, initial system set up, packet sizes,traffic characteristics, a combination of the above, and/or the like.When the one or more criteria are met, various example embodiments maybe applied. Therefore, it may be possible to implement exampleembodiments that selectively implement disclosed protocols.

A base station may communicate with a mix of wireless devices. Wirelessdevices and/or base stations may support multiple technologies, and/ormultiple releases of the same technology. Wireless devices may have somespecific capability(ies) depending on wireless device category and/orcapability(ies). A base station may comprise multiple sectors. When thisdisclosure refers to a base station communicating with a plurality ofwireless devices, this disclosure may refer to a subset of the totalwireless devices in a coverage area. This disclosure may refer to, forexample, a plurality of wireless devices of a given LTE or 5G releasewith a given capability and in a given sector of the base station. Theplurality of wireless devices in this disclosure may refer to a selectedplurality of wireless devices, and/or a subset of total wireless devicesin a coverage area which perform according to disclosed methods, and/orthe like. There may be a plurality of base stations or a plurality ofwireless devices in a coverage area that may not comply with thedisclosed methods, for example, because those wireless devices or basestations perform based on older releases of LTE or 5G technology.

In this disclosure, “a” and “an” and similar phrases are to beinterpreted as “at least one” and “one or more.” Similarly, any termthat ends with the suffix “(s)” is to be interpreted as “at least one”and “one or more.” In this disclosure, the term “may” is to beinterpreted as “may, for example.” In other words, the term “may” isindicative that the phrase following the term “may” is an example of oneof a multitude of suitable possibilities that may, or may not, beemployed to one or more of the various embodiments.

If A and B are sets and every element of A is also an element of B, A iscalled a subset of B. In this specification, only non-empty sets andsubsets are considered. For example, possible subsets of B={cell1,cell2} are: {cell1}, {cell2}, and {cell1, cell2}. The phrase “based on”(or equally “based at least on”) is indicative that the phrase followingthe term “based on” is an example of one of a multitude of suitablepossibilities that may, or may not, be employed to one or more of thevarious embodiments. The phrase “in response to” (or equally “inresponse at least to”) is indicative that the phrase following thephrase “in response to” is an example of one of a multitude of suitablepossibilities that may, or may not, be employed to one or more of thevarious embodiments. The phrase “depending on” (or equally “depending atleast to”) is indicative that the phrase following the phrase “dependingon” is an example of one of a multitude of suitable possibilities thatmay, or may not, be employed to one or more of the various embodiments.The phrase “employing/using” (or equally “employing/using at least”) isindicative that the phrase following the phrase “employing/using” is anexample of one of a multitude of suitable possibilities that may, or maynot, be employed to one or more of the various embodiments.

The term configured may relate to the capacity of a device whether thedevice is in an operational or non-operational state. Configured mayalso refer to specific settings in a device that effect the operationalcharacteristics of the device whether the device is in an operational ornon-operational state. In other words, the hardware, software, firmware,registers, memory values, and/or the like may be “configured” within adevice, whether the device is in an operational or nonoperational state,to provide the device with specific characteristics. Terms such as “acontrol message to cause in a device” may mean that a control messagehas parameters that may be used to configure specific characteristics ormay be used to implement certain actions in the device, whether thedevice is in an operational or non-operational state.

In this disclosure, various embodiments are disclosed. Limitations,features, and/or elements from the disclosed example embodiments may becombined to create further embodiments within the scope of thedisclosure.

In this disclosure, parameters (or equally called, fields, orInformation elements: IEs) may comprise one or more information objects,and an information object may comprise one or more other objects. Forexample, if parameter (IE) N comprises parameter (IE) M, and parameter(IE) M comprises parameter (IE) K, and parameter (IE) K comprisesparameter (information element) J. Then, for example, N comprises K, andN comprises J. In an example embodiment, when one or more messagescomprise a plurality of parameters, it implies that a parameter in theplurality of parameters is in at least one of the one or more messages,but does not have to be in each of the one or more messages.

Furthermore, many features presented above are described as beingoptional through the use of “may” or the use of parentheses. For thesake of brevity and legibility, the present disclosure does notexplicitly recite each and every permutation that may be obtained bychoosing from the set of optional features. However, the presentdisclosure is to be interpreted as explicitly disclosing all suchpermutations. For example, a system described as having three optionalfeatures may be embodied in seven different ways, namely with just oneof the three possible features, with any two of the three possiblefeatures or with all three of the three possible features.

Many of the elements described in the disclosed embodiments may beimplemented as modules. A module is defined here as an element thatperforms a defined function and has a defined interface to otherelements. The modules described in this disclosure may be implemented inhardware, software in combination with hardware, firmware, wetware (i.e.hardware with a biological element) or a combination thereof, all ofwhich may be behaviorally equivalent. For example, modules may beimplemented as a software routine written in a computer languageconfigured to be executed by a hardware machine (such as C, C++,Fortran, Java, Basic, Matlab or the like) or a modeling/simulationprogram such as Simulink, Stateflow, GNU Octave, or LabVIEWMathScript.Additionally, it may be possible to implement modules using physicalhardware that incorporates discrete or programmable analog, digitaland/or quantum hardware. Examples of programmable hardware comprise:computers, microcontrollers, microprocessors, application-specificintegrated circuits (ASICs); field programmable gate arrays (FPGAs); andcomplex programmable logic devices (CPLDs). Computers, microcontrollersand microprocessors are programmed using languages such as assembly, C,C++ or the like. FPGAs, ASICs and CPLDs are often programmed usinghardware description languages (HDL) such as VHSIC hardware descriptionlanguage (VHDL) or Verilog that configure connections between internalhardware modules with lesser functionality on a programmable device. Theabove mentioned technologies are often used in combination to achievethe result of a functional module.

The disclosure of this patent document incorporates material which issubject to copyright protection. The copyright owner has no objection tothe facsimile reproduction by anyone of the patent document or thepatent disclosure, as it appears in the Patent and Trademark Officepatent file or records, for the limited purposes required by law, butotherwise reserves all copyright rights whatsoever.

While various embodiments have been described above, it should beunderstood that they have been presented by way of example, and notlimitation. It will be apparent to persons skilled in the relevantart(s) that various changes in form and detail can be made thereinwithout departing from the scope. In fact, after reading the abovedescription, it will be apparent to one skilled in the relevant art(s)how to implement alternative embodiments. Thus, the present embodimentsshould not be limited by any of the above described exemplaryembodiments.

In addition, it should be understood that any figures which highlightthe functionality and advantages, are presented for example purposesonly. The disclosed architecture is sufficiently flexible andconfigurable, such that it may be utilized in ways other than thatshown. For example, the actions listed in any flowchart may bere-ordered or only optionally used in some embodiments.

Further, the purpose of the Abstract of the Disclosure is to enable theU.S. Patent and Trademark Office and the public generally, andespecially the scientists, engineers and practitioners in the art whoare not familiar with patent or legal terms or phraseology, to determinequickly from a cursory inspection the nature and essence of thetechnical disclosure of the application. The Abstract of the Disclosureis not intended to be limiting as to the scope in any way.

Finally, it is the applicant's intent that only claims that include theexpress language “means for” or “step for” be interpreted under 35U.S.C. 112. Claims that do not expressly include the phrase “means for”or “step for” are not to be interpreted under 35 U.S.C. 112.

The invention claimed is:
 1. A method comprising: receiving, by awireless device, a first downlink control information (DCI) indicatingan activation of a configured uplink grant Type 2 of a cell;transmitting transport blocks based on the configured uplink grant Type2; transitioning the cell to a dormancy in response to receiving asecond DCI; and clearing the configured uplink grant Type 2 associatedwith the cell in response to the transitioning the cell to the dormancy.2. The method of claim 1, wherein the transitioning the cell to thedormancy comprises transitioning the cell to the dormancy while keepingthe cell activated.
 3. The method of claim 1, further comprisingtransmitting, during the dormancy, a channel state information reportfor the cell.
 4. The method of claim 1, wherein the dormancy of the cellcomprises a time period when a cell deactivation timer, associated withthe cell, is running.
 5. The method of claim 1, further comprising:receiving a medium access control control element (MAC CE) indicating anactivation of the cell; and activating the cell based on the MAC CEindicating the activation of the cell, wherein the transitioning thecell to the dormancy is after the activating.
 6. The method of claim 1,further comprising deactivating the cell after the transitioning thecell to the dormancy, wherein the deactivating is based on: receiving aMAC CE indicating the deactivation of the cell; or expiration of a celldeactivation timer.
 7. The method of claim 1, wherein the second DCIcomprises a group common DCI addressed to a group of wireless devicescomprising the wireless device, wherein the group common DCI isassociated with a group common radio network temporary identifiercomprising a power saving radio network temporary identifier.
 8. Awireless device comprising: one or more processors and memory storinginstructions that, when executed by the one or more processors, causethe wireless device to: receive a first downlink control information(DCI) indicating an activation of a configured uplink grant Type 2 of acell; transmit transport blocks based on the configured uplink grantType 2; transition the cell to a dormancy in response to receiving asecond DCI; and clear the configured uplink grant Type 2 associated withthe cell in response to the transitioning the cell to the dormancy. 9.The wireless device of claim 8, wherein the transitioning the cell tothe dormancy comprises transitioning the cell to the dormancy whilekeeping the cell activated.
 10. The wireless device of claim 8, whereinthe instructions further cause the wireless device to transmit, duringthe dormancy, a channel state information report for the cell.
 11. Thewireless device of claim 8, wherein the dormancy of the cell comprises atime period when a cell deactivation timer, associated with the cell, isrunning.
 12. The wireless device of claim 8, wherein the instructionsfurther cause the wireless device to: receive a medium access controlcontrol element (MAC CE) indicating an activation of the cell; andactivate the cell based on the MAC CE indicating the activation of thecell, wherein the transitioning the cell to the dormancy is after theactivating.
 13. The wireless device of claim 8, wherein the instructionsfurther cause the wireless device to deactivate the cell after thetransitioning the cell to the dormancy, wherein the deactivating isbased on: receiving a MAC CE indicating the deactivation of the cell; orexpiration of a cell deactivation timer.
 14. The wireless device ofclaim 8, wherein the second DCI comprises a group common DCI addressedto a group of wireless devices comprising the wireless device, whereinthe group common DCI is associated with a group common radio networktemporary identifier comprising a power saving radio network temporaryidentifier.
 15. A method comprising: transmitting, by a base station toa wireless device, a first downlink control information (DCI) indicatingan activation of a configured uplink grant Type 2 of a cell of thewireless device; receiving transport blocks based on the configureduplink grant Type 2; transitioning the cell of the wireless device to adormancy in response to transmitting a second DCI; and clearing theconfigured uplink grant Type 2 associated with the cell in response tothe transitioning the cell to the dormancy.
 16. The method of claim 15,wherein the transitioning the cell to the dormancy comprisestransitioning the cell to the dormancy while keeping the cell activated.17. The method of claim 15, further comprising receiving, from thewireless device and during the dormancy, a channel state informationreport for the cell.
 18. The method of claim 15, wherein the dormancy ofthe cell comprises a time period when a cell deactivation timer,associated with the cell, is running.
 19. The method of claim 15,further comprising: transmitting a medium access control controlelement, MAC CE, indicating an activation of the cell; activating thecell based on the MAC CE indicating the activation of the cell, whereinthe transitioning the cell to the dormancy is after the activating; anddeactivating the cell after the transitioning the cell to the dormancy,wherein the deactivating is based on: transmitting a MAC CE indicatingthe deactivation of the cell; or expiration of a cell deactivationtimer.
 20. The method of claim 15, wherein the second DCI comprises agroup common DCI addressed to a group of wireless devices comprising thewireless device, wherein the group common DCI is associated with a groupcommon radio network temporary identifier comprising a power savingradio network temporary identifier.